1.2 Purchasing, Downloading and Installing EEPro
The EEPro software can only be purchased on-line from the web store at Texas Instruments Inc. at http://www.ti.com/calc. The software can be installed directly from your computer to your calculator using TIGRAPH LINKTM hardware and software (sold separately). Directions for purchasing, downloading and installing EEPro software are available from TIs website.
1.3 Manual Ordering Information
Chapters and Appendices of the manual for EEPro can be downloaded from TIs web store and viewed using the free Adobe Acrobat Reader which can be downloaded from http://www.adobe.com (it is recommended that you use the latest version of the Acrobat reader and use the most updated driver for your printer). Printed manuals can be purchased separately from da Vinci Technologies (see address on cover page or visit da Vincis website http://www.dvtg.com/ticalcs/docs).

1.4 Memory Requirements

The EEPro program is installed in the system memory portion of the flash ROM, which is separate from the RAM available to the user. EEPro uses RAM to store some of its session information, including values entered and computed by the user. The exact amount of memory required depends on the number of user-stored variables and the number of session folders designated by the user. To view the available memory in your TI calculator, use the function. It is recommended that at least 10K of free RAM be available for installation and use of EEPro.
1.5 Differences between TI-89 and TI-92 plus
EEPro is designed for two models of graphing calculators from Texas Instruments, the TI-92 Plus and the TI-89. For consistency, keystrokes and symbols used in the manual are consistent with the TI-89. Equivalent key strokes for the TI-92 plus are listed in Appendix D.

1.6 Beginning EEPro

To begin EEPro, start by pressing the O key. This accesses a pull down menu. Use the D key to move the cursor bar to EE Pro Elec. Eng. and press. Alternatively, enter [A] on TI-89, or key on TI-92 Plus to get to the home screen of EEPro.
(Pull down Menu for O EEPro option is further down the list)
Pull down Menu on for O (EEPro at the end of the list)
The EEPro home screen is displayed below. The tool bar at the top of the screen lists the titles of the main sections of EEPro which can be activated by pressing the function keys.
Tools: Editing features, information about EEPro in A:About Analysis-Accesses the Analysis section of the software Equations-Accesses the Equations section of the software. Reference-Accesses the Reference section of the software. Info-Helpful hints on EEPro.

Series RC

Parallel RC
RLC An RLC series circuit can be added as a rung (parallel) or as an RLC parallel circuit as a side (series). Choose Series or Parallel for Config, and enter a value for R in ohms, L in henrys, and C in farads.

Series RLC

Parallel RLC
General Impedance An impedance can be added as a rung (parallel) or side (series). Choose Series or Parallel for Config, and enter a value for Z_ in ohms.

Series Impedance

Parallel Impedance
Transformer - (ideal transformer) A transformer can be added only in cascade connection. Specify turns ratio by entering a value for n.
Gyrator- (synthetic inductance filter) A gyrator can be added only in cascade connection. Specify gyrator parameter by entering a value for .
Voltage-Controlled I A controlled voltage can be added only in cascade connection. Specify base resistance and transconductance by entering values for rb in ohms and gm in siemens. Current-Controlled I A controlled current can be added only in cascade connection. Specify base resistance and common base current gain by entering values for rb in ohms and. Transmission Line A transmission line can be added only in cascade connection. Specify characteristic impedance and electrical length by entering values for Z0 in ohms and 0 in radians. The variation of 0 with frequency is not taken into account in the ladder network calculation. Caution-be sure to enter a value for the electrical length 0 which is consistent with the chosen frequency. Open Circuited Stub Can be added only in cascade connection. Specify characteristic impedance and electrical length by entering values for Z0 in ohms and 0 in radians. Caution-be sure to enter a value for the electrical length 0 which is consistent with the chosen frequency. Short Circuited Stub Can be added only in cascade connection. Specify characteristic impedance and electrical length by entering values for Z0 in ohms and 0 in radians. Caution-be sure to enter a value for the electrical length 0 which is consistent with the chosen frequency.

I rb (hie) ICIS

Two-Port Network Can be added only in cascade connection. Choose z, y, h, g, a, or b for Input Parameters, and enter values for.11,.12,.21, and.22.
Zin_: I2/V1_: I2/I1_: Pout/Pin: V2/V1_: V2/I1_: (Input Impedance in ohms) Returns a real or complex number, variable name or algebraic expression. (Forward Transfer Admittance Returns a real or complex number, variable name or algebraic in Siemens) expression. (Current Transfer Ratio) Returns a real or complex number, variable name or algebraic expression. (Real Power Gain) Returns a real or complex number, variable name or algebraic expression. (Forward Voltage Transfer Ratio) Returns a real or complex number, variable name or algebraic expression. (Forward Transfer Impedance Returns a real or complex number, variable name or algebraic in ohms) expression.

EE Pro for TI-89, 92 Plus Analysis - Gain and Frequency
s_ s_ 1. z1 z2 s_ s_ 1 1. p1 p2
IJ FG IJ KH K IJ FG IJ KH K

Eq. 7.1.1

(Partial Fraction Expansion) Returns a symbolic expression of the form:

Example 7.1

K1 K2 K3 + + +. s_ s_ s_ 1 p1 p2 p3

IJ FG K H

Eq. 7.1.2
Find the transfer function and its partial fraction expansion for a circuit with a zero located at -10 r/s and three poles located at -100 r/s, -1000 r/s and -5000 r/s. Assume that the multiplier constant is 100000.

1. 2. 3. 4.

Output screen
Partial view of Partial Fraction Expansion form for H(s)
Choose Roots for Inputs. Enter 100000 for Constant, {-10} for Zeros, and {-100 -1000 -5000} for Poles. Press to calculate H(s)_ and PFE_. To view H(s)_ in Pretty Print format, press and. Alternatively, the Bkey can be pressed to achieve the same result.
Now you are ready to go on to the next example. Press N to return to the Gain and Frequency screen and select Bode Diagrams.

7.2 Bode Diagrams

The behavior of the transfer function, as the frequency of a sinusoidal source varies, is of great interest to engineers. A very effective way to grasp the relationship between transfer function and frequency is to plot the magnitude and the argument of the transfer function on two separate graphs. These plots are often called Bode gain and phase plots. A gain plot shows the magnitude of the transfer function expressed in decibels (dB) as 20*LOG(Magnitude of Transfer Function) as a function of the logarithm of the radian frequency on the horizontal scale. The phase plot shows the argument of the transfer function expressed as the phase angle (i.e., ARG (Transfer Function) ) plotted as a function of the logarithm of the radian frequency on the horizontal scale.
Xfer: Indep: Graph Type: (Transfer Function) (Independent Variable (Bode Gain or Bode Phase) Enter a symbolic expression. Enter a global name. Default is s_. Press and select Gain or Phase. Determines whether the y axis range fields appear as A-Min and A-Max (for Gain) or -Min and -Max (for Phase).

-Max: Autoscale:

Label Graph Full Screen A-Min: A-Max:

12.7 Karnaugh Map

The program provides a symbolic representation of a minimization method in a sum of products form. The variable name is restricted to one character per variable and is case-sensitive. The output is an algebraic expression for the prime implicants. In this representation, a logic variable (e.g., A) represents its true value, while A' is used to represent its logical negation.The algorithm uses a form of minimization developed by W.V. Quine and E.J. McCluskey. An exact minimum is usually not possible to obtain because of the amount of computation involved (the problem is not np complete; Ref. Logic Design principles by E. J. McCluskey, Prentice Hall, 1986, p. 246).
Minterms: (List if Minterms) A list of real positive integers representing the decimal number of the inputs for a true output. Thus if we have 4 inputs, the minterms would be a list such as {2,3,4,6,7,8,15} for which the output is a logical 1. A list of real positive integers representing the decimal number of the inputs for which the logical system does not care if the output is true or false. Thus if we have 4 inputs, the Don't Care terms would be a list such as {0,9,10} for which the output can be a 0 or 1.

Dont Care:

(List of Dont Care Terms)

(List of Variables)

A character string consisting of one letter variable names such as ABCD with no spaces between variable names. Returns a logical algebraic expression in Sum of Products form.

Prime Impl:

(Prime Implicant Expression)

Example 12.7

Minimize a five input function with minterms at 0, 2, 4, 6, 8, 10, 11, 12, 13, 14, 16, 19, 29, 30 where minterms 4 and 6 are Dont Cares. The input variables are V, W, X, Y and Z. Find the prime implicant expression.
Partial view of the Prime Implicant Expression
Enter {0, 2, 8, 10, 11, 12, 13, 14, 16, 19, 29, 30} for Minterms and {4, 6} for Dont Care. Enter variable names VWXYZ. Press to compute the result. The screen displays above show the input screen and the resulting output. A Pretty Print form of the resulting Sum of Products expression is shown. Variables that are associated with a prime () indicates a logical inversion.

Chapter 13

Error Functions
This topic demonstrates the procedure for computing numeric solutions for the Error Function and the Complementary Error Function.
13.1 Using Error Functions
The definitions of the Error Function and Complementary Error Function are:

erf ( x ) =

e t dt

Eq. 13.1.1

2 erfc( x ) = 1 erf ( x ) = Field Descriptions
X: Func: Result: (Value) (Error Function type) (Error Function value)

1*. Graph an equation by pressing. Press to choose an equation.
2. Select variables for Independent (x) and Dependent (y) variables.
Variable units reflect settings in EEPro.
4. Select graphing options by pressing
5. Split Screen Mode: Toggle between graph and settings by pressing 2 and O.
6: Full Screen Mode: Press O, j and to return to EEPro.
Note: If an error is generated when attempting to graph, be sure that all of the variables in the graphed equation which are not specified as the independent and dependent variables have entered values. In the EEPro window, press N to view the equations in the sub-topic, select the equation to be graphed by highlighting and pressing , press to display the list of variables in the equation and enter values. Only the dependent (y) and independent (x) variables do not have to contain specified values. Press to display the graph dialogue and repeat the above steps to graph the function.
15.8 Storing and recalling variable values in EEPro-creation of session folders
EEPro automatically stores its variables in the current folder specified by the user in 3 or the HOME screens. The current folder name is displayed in the lower left corner of the screen (default is Main). To create a new folder to store values for a particular session of EEPro, press :/TOOLS, :/NEW and type the name of the new folder (see Chapter 5 of the TI-89 Guidebook for the complete details of creating and managing folders). There are several ways to display or recall a value: The contents of variables in any folder can be displayed using the , moving the cursor to the variable name and pressing to display the contents of a particular variable. Variables in a current folder can be recalled in the HOME screen by typing the variable name. Finally, values and units can be copied and recalled using the /Tools 5:COPY and 6:PASTE feature. All inputs and calculated results from Analysis and Equations section are saved as variable names. Previously calculated, or entered values for variables in a folder are replaced when equations are solved using new values for inputs. Overwriting of variable values in graphing When an equation or analysis function is graphed, EEPro creates a function for the TI grapher which expresses the dependent variable in terms of the independent variable. This function is stored under the variable name pro(x). When the EEPros equation grapher is executed, values are inserted into the independent variable for pro(x) and values for the dependent value are calculated. Whatever values which previously existed in either of the dependent and independent variables in the current folder are cleared. To preserve data under variable names which may conflict with EEPros variables, run EEPro in a separate folder.

15.9 solve, nsolve, and csolve and user-defined functions (UDF)
When a set of equations is solved in EEPro, three different functions in the TI operating system (solve, numeric solve, and complex solve) are used to find the most appropriate solution. In a majority of cases, the entered values are adequate to find numeric solutions using either the solve or csolve functions. However, there are a few instances when functions external to the equation set (user-defined functions) are incorporated into the solving process and nsolve must be used. User defined functions which appear in some of the equation sets of EEPro are erfc(x) erf(x), eeGALV(RR2,.) and ni(TT). In most cases, when all the inputs to a UDF are known, solve or csolve can just pass a computed result to the equation. On the other hand if one is solving for a variable that is an input to the UDF, solve or csolve are unable to isolate the variable in an explicit form, and the operating system resorts to using nsolve. nsolve initiates a series of trial and error iterations for the unknown variable until the solution converges. It should be noted that the solution generated by nsolve is not guaranteed to be unique (i.e. this solving process cannot determine if multiple solutions exist.).
Table 15-1 User Defined Functions
User-defined Function erf(ts, p) erfc (x,D,t) eegalv (Rx, RR2, RR3, RR4, Rg, Rs, Vs) ni(TT) Topic Solid State Solid State Meters and Bridges Solid State Sub-topic PN Junction Current Semiconductor Basics Wheatstone Bridge Semiconductor Basics, PN Junctions, PN Junction Current, MOS Transistor I
15.10 Entering a guessed value for the unknown using nsolve
To accelerate the nsolve converging process and, if multiple solutions exist, enhance the possibility that nsolve resolves the correct solution, the user can enter a guessed value for the unknown which nsolve will use as an initial value in the first iteration of its solving process. Enter guessed a value for the variable in the input dialogue. Press /Opts, m/Want. Press / to compute a solution for the variable.
erfc(x,D,t) is a user defined function that appears in the Semiconductor Basics section of Solid State.
Only one input to a user defined function can be specified as an unknown.
EEPro displays a notice if the nsolve routine is used.
The user can enter a value for for the unknown and designate it as a guessed value to accelerate the nsolve convergence process.
15.11 Why can't I compute a solution?
If a solution is unable to be computed for an entered problem, you might check the following: 1. 2. 3. Are there at least as many equations selected as there are unknown parameters? Are the entered values or units for the known parameters reasonable for a specific case? Are the selected equations consistent in describing a particular case (for example, the choice of certain equations used in the calculation of diode properties depends on whether the donor density of the doping substance Nd, exceeds the acceptor density, Na in the Semiconductors section of Solid State)

Solution - The second, third and fourth equations are needed to compute the solution for this problem.
Select these by highlighting and pressing the key. Press to display the input screen, enter the known variables and press to solve the unknowns.
-PQYP8CTKCDNGU8UA84UAQJO4NAQJO %QORWVGF4GUWNVU2OCZA92A9
16.5 V and I Source Equivalence
The two equations in this topic show the equivalence between a voltage source and a current source. A voltage source Vs with an internal series resistance of Rs is equivalent in all its functionality to a current source Is with a source resistance Rs connected across it.

Vs Rs Vs = Is Rs Is =

Eq. 16.5.1 Eq. 16.5.2
Voltage and current sources and its equivalence
Example 16.5 - Find the short circuit current equivalent for a 5_V source with a 12.5_ohm source resistance.
Solution - Either form of the equation can be used to solve the equation. Press to display the user
interface, enter the values of all known inputs, and press to solve for Is. -PQYP8CTKCDNGU8UA84UA %QORWVGF4GUWNVU+UA#

Chapter 17

Capacitors, Electric Fields
This section covers seven topics to compute electric field properties and capacitance of various types of structures. When the section is accessed, the software displays the topics in a pop up menu shown above. Point Charge Long Charged Line Charged Disk Parallel Plates Parallel Wires

Coaxial Cable Sphere

A complete list of all the variables used in this section is given below. Variable A C cl d E Er Ez F Q r ra rb V Vz W z r l s Description Area Capacitance Capacitance per unit length Separation Electric field Radial electric field Electric field along z axis Force on plate Charge Radial distance Inner radius, wire radius Outer radius Potential Potential along z axis Energy stored z axis distance from disk Relative permittivity Line charge Charge density Unit m2 F F/m m V/m V/m V/m N C m m m V V J m unitless C/m C/m2
EE Pro for TI - 89, 92 Plus Equations - Capacitors & Electric Fields

17.1 Point Charge

The two equations in this topic calculate the radial electric field Er and the potential V at a point located a distance r away from a point change Q. The first equation shows the inverse square relationship between Er and r, while the second equation shows the inverse relationship between the potential V and distance r. The equations have been generalized to include r, the relative permittivity of the medium.

Example 27.1.2 - Find the diffusion penetration depth after one hour for phosphorus atoms with a diffusion coefficient of 1.8 x 10-14 cm2/s. The carrier density at the desired depth is 8 x 1017 cm-3 while the surface density is 4 x 1019 cm-3.

Notice of nsolve routine

Solution - Equation 21.1.8 is needed to compute the solution for this problem. Select it by highlighting and pressing
the key. Press to display the input screen, enter all the known variables and press to solve the equation. The nsolve routine is used since x is an input for the user defined function erfc (see Chapter 15: Introduction to Equations for more information about nsolve and user-defined functions). The computed results are shown in the screen displays above. -PQYP8CTKCDNGU&'AEO@U0'AEO@0'AEO@ VAU %QORWVGF4GUWNVUZ'A

27.2 PN Junctions

These equations describe the properties of PN junctions. They can be classified in two four distinct categories. The first equation calculates the built-in voltage Vbi for a step junction in terms of temperature TT, the doping densities Nd and Na, and the intrinsic density ni(TT).

k TT Nd Na ln 2 q ni TT

F I GH b g JK

Eq. 27.2.1

Equations 27.2.2 - 27.2.4 compute the depletion layer widths xn and xp in the p and the n regions of the junction in terms of the dielectric constant s, doping densities Nd and Na, built-in voltage Vbi and the applied voltage Va; xd is the total depletion region width for a given applied voltage.
2 s 0 Vbi Va Na q Nd Na + Nd

Eq. 27.2.2

Nd xn Na

Eq. 27.2.3

xd = xn + xp

Eq. 27.2.4

Equation 27.2.5 calculates the capacitance Cj of a PN junction in terms of s, junction area Aj and xd.

s 0 Aj xd

Eq. 27.2.5
The last two equations (27.2.6 and 27.2.7) calculate the built-in voltage Vbi and depletion layer width xd for a linearly-graded junction with a gradient parameter aLGJ.
2 k TT aLGJ xd ln 2 ni (TT ) q

Rin = 0 re + 0 re + Rl

Eq. 28.7.1 Eq. 28.7.2

02 RBA RBA + 0 Rl + re

Eq. 28.7.3
Example 28.7 - Transistors in a Darlington pair having a 0 value of 100 are connected to a load of 10 k.
The emitter, base and source resistances are 25 , 1500 k and 1k, respectively. The external base resistance is 27 k.
enter all the known variables and press to solve the equations. The computed results are shown in the screen displays above.
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28.8 Darlington (CC-CE)

The Darlington configuration connected as a common collector-common emitter configuration is described in this section. The first two equations define the input resistance Rin and output resistance Ro, in terms of base resistance rb, emitter resistance re, collector resistance rrc, and current gain 0. The final equation calculates the voltage gain Av, in terms of the emitter and load resistances, the source impedance, and the current gain 0.
Rin = rb + 0 re rrc Ro = 0 Rl Av = Rs re + 2 0
Eq. 28.8.1 Eq. 28.8.2 Eq. 28.8.3
respectively. The configuration has a value of 0 equal to 100. The source and collector resistances are 1 k and 100 k. Find the voltage gain, input and output resistances.
Example 28.8 - An amplifier circuit has a base, emitter, and load resistance of 1.5 k, 25 , and 10 k,
enter all the known variables and press to solve the equations. The computed results are shown in the screen displays above. -PQYP8CTKCDNGUTDAMTTEAMTGA4NAM4UAM %QORWVGF4GUWNVU#X4KPA4QAM
28.9 Emitter-Coupled Amplifier
Two classes of emitter-coupled amplifiers are covered in this section. The first equation shows the general relationship between 0 and 0; the current gains under common base and common emitter configurations. The next three equations show the input resistance Rin, output resistance Ro, and voltage gain Av for a common collector-common base method of connection. The last three equations correspond to cascade configuration of the transistors, which is a combination of common emitter-common base configuration resulting in a current gain Ai with corresponding input resistance Rin and output resistance Ro.

1 H B L A Wf = Re l Wf =
The third equation defines the mechanical pressure F due to the flux density B.

Eq. 31.1.1 Eq. 31.1.2

B0 Ns s 2

Eq. 31.1.3

The last equation shows the r.m.s. value of the emf Es induced by Ns turns moving with an angular velocity s sweeping a magnetic flux of.

Eq. 31.1.4

Example 31.1 - A conductor having a length of 15 cm and a cross sectional area of 0.5 cm2 is subjected to a
magnetic induction of 1.8 T and a field intensity of 2.8 A/m. The magnetic reluctance is 0.46 A/Wb. The conductor has 32 turns and is moving at a rotational speed of 62 rad/s. Find the magnetic flux, the magnetic energy, the induced electric field and the mechanical pressure on the coil.

1st Solution: Upper Half

1st Solution: Lower Half

2nd Solution: Upper Half

2nd Solution: Lower Half
Solution - All of the equations are needed to solve this problem. Press to display the input screen,
enter all the known variables and press to compute the solution. Since the flux is a squared term in the second equation, there are two equal and opposite results calculated for and Es. -PQYP8CTKCDNGU %QORWVGF4GUWNVU #AEO@$A6*A#O.AEO4GNA#9D 0UUATU 'UA8

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31.2 DC Generator

The first equation describes the relation between electrical radian frequency me, the mechanical radian frequency m, and the number of poles in the generator p. The next equation expresses the emf generated per turn Eta with the relative motion of the coil with respect to the magnetic field.

p m 2 p Eta = m

Eq. 31.2.1 Eq. 31.2.2
The next two equations illustrate two ways to express the induced armature emf Ea as a function of number of armature coils N, the number of parallel paths ap, number of poles p, the mechanical radian frequency m, a machine constant K, and flux. The machine constant K, is seen to be dependent purely on the characteristics of the machine.
N p m ap Ea = K m Np K= ap Ea =
Eq. 31.2.3 Eq. 31.2.4 Eq. 31.2.5
The sixth equation shows the conversion of mechanical energy available as torque T and mechanical angular velocity m to its electrical counterpart namely, the emf and current in the armature Ea, and Ia and the voltage and current in the field windings Ef and If. The next equation for torque connects T with K, , and the current Ia.
T m = Ea Ia + Ef IIf T = K Ia

Eq. 31.2.6 Eq. 31.2.7

The armature resistance is given by the equation for Ra in terms of N, ap, coil length L, area A and its resistivity.

N L ap 2 A

Eq. 31.2.8
Vf represents the voltage across the field winding carrying a current IIf and a resistance Rf. The terminal voltage Vt represents the induced voltage minus the IR drop in the armature.

31.6 Separately-Excited DC Motor
These equations form the working foundation for a separately excited motor. The first equation calculates the field voltage Vf in terms of the field current IIf and field coil resistance Rf.

Vf = Rf IIf

Eq. 31.6.1
The second equation computes the terminal voltage Vt in terms of the machine constant K, magnetic flux , mechanical radian frequency m, armature current Ia, and armature resistance Ra.

Vt = K m + Ra Ia

The load torque TL, in the third equation is defined in terms of K, , Ia and Tloss.

Eq. 31.6.2

TL = K Ia Tloss

Eq. 31.6.3

Ea, the back emf induced in the rotor, is calculated by the next equation. Torque T links with K, , and Ia.

Ea = K m T = K Ia

Eq. 31.6.4 Eq. 31.6.5
The reciprocal power relationship between m and by the inverse quadratic relationship. The next set of equations show the relationship between T, the torque lost due to friction Tloss and the torque load TL. The last equation in this set shows relationship of power with torque T and angular velocity m.

Vt Ra T 2 K K

Eq. 31.6.6

T = Tloss + TL P = T m

Eq. 31.6.7 Eq. 31.6.8
Example 31.6 - Find the terminal voltage, field current and machine constant for a motor with an armature
current 0.5 A and resistance of 100 rotating at an angular velocity of 31 r/s. The back emf is 29 V. The field is driven by a 15 V source driving a 50 load. The flux available in the armature is 2.4 Wb.
Solution - Solve the first, second, fourth and fifth equations. Select these by highlighting and pressing. Press to display the input screen, enter all the known variables and press to solve the selected equation set. The computed results are shown in the screen display above.
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31.7 DC Shunt Motor

These seven equations describe the principal characteristics of a DC shunt motor. The first equation expresses the terminal voltage Vt in terms of the field current IIf and field resistance Rf along with the external field resistance Re. The second equation defines the terminal voltage Vt in terms of the back emf (expressed in terms of the machine constant K, flux swept , and angular velocity m) and the IR drop in the armature circuit.
Vt = Re + Rf IIf Vt = K m + Ra Ia

Eq. 31.7.1 Eq. 31.7.2

The third equation refers to the torque available at the load TL due to the current Ia in the armature minus the loss of torque Tloss due to friction and other reasons.

Eq. 31.7.3

The fourth equation gives the definitive relationship between the back emf Ea, K, and m.

Eq. 31.7.4

The next equation displays the reciprocal quadratic relationship between m, Vt, K, , armature resistance Ra, adjustable resistance Rd and T.

Input Field Value: (Desired Value or Design Spec.) Tolerance: (Tolerance of Component) Enter a real number. Press to display selection. The values range from tolerance 20% down to.0.05%. Press to display component choices: Resistor, Inductor, or Capacitor.
Component: (Type of Component)
Output Field Value: (Closest Standard Value to the Desired Value) Bands: (Resistor Color Bands - if the Component is a Resistor )
Returns a "Preferred Value". Returns the color bands in a resistor.
Example 34.1 - A design calculation yields 2.6 microfarads for a capacitor. Find the closest preferred value with
a tolerance of 1%. Use the following directions: 1. 2. 3. 4. 5. Press the 3 setting and set Display Digits to FLOAT 8, press. In the Value field, enter 2.6E-6. In the Tolerance field, press to display choices; use D key to move the highlight bar 1 % and press. In the Component field, press to display; use D key to move the highlight bar to "Capacitor" and press to select. The Standard Component Value is displayed as 2.61E-6_F.
EE Pro for TI - 89, 92 Plus Reference - Standard Component Values

Chapter 35

Semiconductor Data
Physical, chemical, electrical, electronic and mechanical properties of common semiconductors are presented in this section. The information is organized under five (5) topics listed in detail in Table 35-1. All properties are listed at 300 K, unless otherwise specifically stated. Details of how to access the information is included in the table.
Table 35-1 Semiconductor Data Section Label Data Fields

Semiconductors

Input Field: Semiconductor:

Description

Press to display options (Si or GaAs), use D to move the highlighter to Si or GaAs and press to select 1/cm3 g/mol V/cm structure name g/cm3 unitless 1/cm3 1/cm3 unitless # # # V eV 1/cm3 nm 1/K C s 2 cm /(V*s) cm2/(V*s) eV J/g W/(cm*K) 2 cm /s torr torr V
Atoms:(Atoms) At Wt:(Atomic Weight) Br Fld: (Breakdown Field) xtal:(Crystal Structure) : (Density) r: (Relative permittivity) Nc: (Density of states, CB) Nv: (Density of states, VB) mle: (Longitudinal e- mass) mte: (Transverse e-mass) mlh:(Light hole mass) mhh:(Heavy hole mass) : (Electron affinity) EG:(Band gap) ni: (Intrinsic Density) a: (Lattice constant) th:(Thermal expansion coefficient) MP:(Melting Point) : (Carrier lifetime) n: (Electron mobility) p: (Hole Mobility) Raman E: (Raman Photon Energy) Sp Ht: (Specific heat) Th. Cond: (Thermal conductivity) Diff Cons: (Diffusion Constant) Vapor Pr: (Vapor Pressure 1600C) Vapor Pr: (Vapor Pressure 930C) Work Fn: (Work Function)

EE Pro for TI-89, 92 Plus Appendix A - Frequently Asked Questions
A. EEPro automatically stores its variables in the current folder specified by the user in 3 or the HOME screens. The current folder name is displayed in the lower left corner of the screen (default is Main). To create a new folder to store values for a particular session of EEPro, press :/TOOLS, :/NEW and type the name of the new folder (see Chapter 5 of the TI-89 Guidebook for the complete details of creating and managing folders). There are several ways to display or recall a value: The contents of variables in any folder can be displayed using the , moving the cursor to the variable name and pressing to display the contents of a particular variable. Variables in a current folder can be recalled in the HOME screen by typing the variable name. Finally, values and units can be copied and recalled using the /Tools 5:COPY and 6:PASTE feature. All inputs and calculated results from Analysis and Equations section are saved as variable names. Previously calculated, or entered values for variables in a folder are replaced when equations are solved using new values for inputs. Q. Why is it that some of the values of variables saved earlier are cleared when I graph an equation or analysis function which uses the variable name(s)? A. When an equation or analysis function is graphed, EEPro creates a function for the TI grapher which expresses the dependent variable in terms of the independent variable. This function is stored under the variable name pro(x). When the EEPros equation grapher is executed, values are inserted into the independent variable for pro(x) and values for the dependent value are calculated. Whatever values which previously existed in either of the dependent and independent variables in the current folder are cleared. To preserve data under variable names which may conflict with EEPros variables, run EEPro in a separate folder using the guidelines above. Q. An item which is supposed to be displayed in a menu doesnt appear. A. Some menus have more than eight items. If an arrow appears next to the digit 8, use the arrow key D to scroll the menu and view the remaining topics or press 2 D jump to the bottom of the menu. Q. Is there a help section in the software? A. There is a short series (slides) of general hints which can be accessed from the main screen of EEPro under /Info. A different message appears each time is pressed. Weve attempted to keep most of the explanation of certain topics to the manual in an effort to keep the software compact. Consult the chapter corresponding to the appropriate section of the software. If your are still in need of clarification, contact Texas Instruments (contact information in the Warranty and Technical Support section of the manual) A compiled list of the received questions and answers will be posted periodically on the da Vinci website. http://www.dvtg.com/faq/eepro

The TI-89, A Graphing Calculator with Computer Algebra
Tips for TI-86 Users* by Mary Ann Connors Westfield State College Westfield, MA 01086
1. Keyboard Layout, Menu Navigation, Home Screen Basics 2. Graphing and Tables 3. Differential Equations 4. Matrices 5. Numeric Solver 6. Statistics 7. Flash Applications (TI-89 only) 8. Units Conversion 9. A Comparison of the TI-89, TI-92 Plus, and the TI-86 10. CAS- Computer Algebra System (TI-89 only) http://education.ti.com/product/tech/89/down/89tips-02.html 11. 3-D Graphing (TI-89 only) http://education.ti.com/product/tech/89/down/89tips-08.html 12. Scripts (TI-89 only) http://education.ti.com/product/tech/89/down/89tips-10.html 13. Memory Management for the TI-89 http://education.ti.com/product/tech/89/down/89tips-05.html This introduction to the TI-89 is specifically designed to meet the needs of a TI-86 user. The reader is assumed to be familiar with the features and vocabulary of the TI-86. It also assumes the reader is using the TI-89 while working through the document. Please consult the manual for additional details.
*Adaptation of Tips for TI-83 Users by Sally E. Fischbeck 1. Keyboard Layout, Menu Navigation, Home Screen Basics Getting Started Press the ON key (in the lower left corner) and then the Applications key labeled APPS (the rectangular key to the lower left of the cursor control keys). The following menu will appear on the TI-89. The options are selected by either typing the number or highlighting with the down arrow cursor key (in the upper right corner) and pressing the enter key (in the lower right hand corner).

Version 1.0

Version 2.0 and higher
Note that features 2-5 of the Applications key are the same as the options available with the Green Diamond () key and F1-F5 keys. The exception is that the TblSet option is not listed. Option 1 can be accessed using the HOME key in the fourth row, first column. The HOME screen appears when you turn on the TI-89. However, if you are in another application screen and the TI-89 turns off automatically, the TI-89 will return to the application you used last. Resetting After using the TI-89 and changing modes several times, you may set the calculator back to all default modes by pressing 2nd 6 (MEM), F1(Reset) and 3 or by highlighting 3:Default and pressing ENTER. To reset all memory press 2nd, 6 (MEM) then F1(Reset) and select 1: All.
Adjusting the Contrast Adjust the contrast by holding down the Green diamond () and minus (-) to lighten or plus (+) to darken the screen Clearing the Home Screen To clear the screen, press F1 and then 8 (Clear Functions). F6(Clean-up), 2:NewProb, Enter will clear the home screen and entry line, clear single-character variables, turn off
all functions and stat plots, and perform other clear commands ClrDraw, ClrErr, ClrGraph, ClrIO and ClrTable. To access F6, press 2nd, F1.
Multiple Definitions of Keys The TI-89 has a yellow 2nd key, a purple Alpha key, and a green Diamond key. Many keys have three meanings and some have four. For example, ESC (the escape key) also is QUIT or PASTE depending if you first press the yellow 2nd key or the green Diamond key. The 5 key is also the letter M (if you first press the purple Alpha key) and is the MATH menu (if you press the 2nd key, then the 5 key). Using the Diamond key with the = key is the shortcut to typing. These unmarked short cuts (hidden keyboard) can be seen by pressing the Diamond EE (key above STO). Home Screen Toolbar Menu Generally, the TI-89 will show the home screen when it is turned on. (If not then press 2nd QUIT or press the HOME key located below the Diamond key.) Across the very top of the home screen appears a toolbar menu with options labeled F1 through F6. Press the corresponding key from the very top row of keys, F1 through F5, or 2nd F1 for F6.
All TI-89 screens (such as HOME, GRAPH, TABLE, Y= editor, etc.) have different toolbar menus, each customized with the commands for that particular environment. This makes the TI-89 very user-friendly. Making Menu Selections Select the F6 menu called "Clean Up" by pressing 2nd, F1. Two options will appear. To select option 2:NewProb, press the 2 key. (Another way is to arrow down to highlight the

second option and then press ENTER.) This copies the command into the "entry line". Now press ENTER to execute it. NewProb clears the home screen and turns off any userdefined functions or stat plots, thus preparing the calculator for a new problem. To exit any menu without making a choice, press ESC.
Executing Commands New commands first appear at the bottom of the TI-89 screen in the "entry line". Pressing ENTER places the command and answer in the "history area". As you enter new commands, the old commands and answers scroll up the screen. Try to recreate the screens shown below. (If you need to erase an error, look ahead to the section on editing.) Hints: The sine function is a 2nd option above the Y key, there is no x2 key (always use the exponentiation key ^), the imaginary number "i" is the 2nd option for the Catalog key, infinity is a Diamond option of Catalog and the answers are exact. To see all the digits of the answer of the last problem (58^39), press the up arrow to enter the history area and then press the right arrow. Return to the entry line by pressing the down arrow or ESC.
Editing If you use a computer, then editing with the TI-89 will seem very natural. By default the TI-89 is in insert mode with a vertical cursor bar. New text is inserted to the left of the cursor on the entry line. Errors are deleted using the backspace key (the back arrow key, to the left of the CLEAR key) or the CLEAR key (once or twice) to delete the entire line to start over. In contrast, the TI-86 has a blinking box for a cursor which always overwrites the blank, character, reserved word or digit that the cursor highlights. Try this example. Enter sin( on both calculators. (This requires 2 keys on the TI-89; 2nd and Y.) Place the TI-86 cursor on the "s" of sin and the TI-89 cursor to the left of the "s". What happens on each calculator when you now press the "cos" keys? On the TI-86, the "sin(" is replaced by "cos(". On the TI-89, "cos(" is inserted to the left of sin. The TI-89 will not erase text unless the back-arrow (backspace) key or the CLEAR key is used. When syntax errors are made, helpful messages appear with diagnostic information. You must press ESC to remove the error message before you can make the required changes.
The examples above illustrate that (1) the solve command requires an equation to be solved instead of an expression and (2) both the left and right parentheses are always required. Exact vs. Approximate The easiest way is to get a decimal approximation of an answer is to use Diamond, ENTER instead of ENTER to evaluate. Another way to force the answer to be in decimal form is to insert a decimal point after an integer in the problem, for example sin (3/4.) or sin (3./4). There is also a Mode setting that forces all answers to be approximate. Menus in Dialog Boxes Some menus appear in dialog boxes. A good example is the MODE menu. Press the MODE key (next to the HOME key and below the Alpha key). Current selections are shown. Arrow right on the first line labeled Graph to see all six possibilities. Making changes in a particular category requires the use of the ENTER key. The F1, F2 and F3 keys open the three pages of the MODE menu.

Warning: To save all changes when exiting from a dialog box, you must press ENTER one more time. If you exit the box using ESC or any other method, the changes will disappear. Lets try another dialog box. Press 2nd , 6 to access MEMORY. Notice the many different variable types available on the TI-89. Now select F1:RESET and select option 3:Default. Press ENTER twice to save your selection as you exit the MEMORY dialog box. This will return the TI-89 to factory default Mode settings.
More on Menus To page down through long menus use 2nd and then the down arrow key. Some menus have options within options. To illustrate this, press F2: Algebra (to see the first eight algebra commands),
then 2nd down arrow (to page down the menu to see the bottom eight commands). The last item in the menu, B:Extract, is now highlighted. To see the four options under Extract, press the right arrow key. Press ESC twice to exit from all menus. For practice, explore the Applications menu by pressing the APPS key (near the arrow keys). Remember to press ESC to exit a menu without making a selection. Alpha All user-entered text on the TI-89 is lower case while on the TI-86 it is upper case. Pressing the shift key (to the right of the 2nd key) before the alpha key will produce upper case on the TI-89. Pressing the 2nd key before the ALPHA key will produce lower case on the TI-86. Press the X key on the TI-89 and the x-VAR key on the TI-86. The results are x and x respectively. The commonly used letters X, Y, Z, T are separate keys in the fifth row on the TI-89, while on the TI-86 there is one key in the third row, x-VAR. All other letters must be entered by first pressing the ALPHA key. With the TI-89, the user also has the option of entering commands or names of functions such as "sin", by typing in the name of the function using the alpha letters. Try it. Editing Previous Entries Instead of using 2nd ENTER multiple times to recall previous commands, use the up arrow multiple times to enter the "history" portion of the home screen. With the desired previous entry or answer highlighted, press ENTER to copy it to the edit line. The last entry always appears highlighted in the edit line. As with highlighted text on a computer, it will disappear when you type in something new. To keep the last entry in the entry line for further editing, try pressing the right or left arrow keys. This places the cursor at the right end or left end of the edit line. Try the following examples to practice this. Press CLEAR to clear the edit line. From the F2: Algebra menu, select 2:factor. Complete the command: factor(x^4- - 9) and press ENTER. Now press the right arrow key to edit it from the right to read: factor(x^4-9,x) and press ENTER. Now press the left arrow key to insert a "c" in front of factor to get

cfactor (for complex factor). Arrow up into the history area to see the entire answer. Factoring can be done over rational, real, or complex numbers, depending on syntax.
Catalog The CATALOG on the TI-86 is the first item on the CATLG-VARS (2nd CUSTOM) menu. The CATALOG key is below the APPS key on the TI-89. The CATALOG displays an alphabetized list of reserved words and symbols. Use the up or down arrow in the upper right hand corner to move to an item. Press ENTER to paste the selected item to the previous cursor location. Page up or down one page at a time in CATALOG of the TI-89 using the 2nd up arrow or 2nd down arrow. The syntax of the selected command appears at the very bottom of the TI-89 screen. For example, when the command "lcm(" is highlighted, the syntax EXPR1, EXPR2 appears at the bottom of the screen. Do not press the Alpha key first on the TI-89, as you are automatically placed in Alpha Lock when you enter CATALOG. Custom Menu To create a CUSTOM menu on the TI-86 press 2nd, CATLG-VARS, F1, F3 and select up to 15 items from the CATALOG and VARS screens. Press CUSTOM to access your custom menu. The TI-89 has a custom menu (2nd, HOME) which contains many commonly used words so you dont have to type them in. The custom menu will replace the regular menu bar at the top of the screen. To return to the regular menu bar, just select CUSTOM again. You can easily toggle between the two menu bars this way. Check out all the options in the Custom menu. Home Screen Tools (F1) This menu contains editing tools (cut, copy, paste, delete), a quick way to clear the home screen (option 8:Clear Home), the format menu option 9 (to change the number of entry/answer pairs saved in memory from the home screen) and option A:About (tells the version of the code).
2. Graphing and Tables Top Five Blue Keys The TI-89s top keys F1-F5 become Y=, Window, Graph, TblSet and Table if you first use the Diamond key. For example, to select the Y= editor, press the Diamond key and then F1. Press the GRAPH or the TABLE key on the TI-86 to find these options at the bottom of the screen. Each option can be accessed by pressing one of the F1-F5 keys. Y= Editor When a formula is typed in for a new function, it appears in the edit line at the bottom of the TI-89 screen. Press ENTER to save and select. The check mark to the left of the function indicates that the function is selected. F4 in the Y= editor is a toggle for selecting and deselecting entered functions. The functional notation y1(x), y2(x), etc. is required on the TI-89. Type in the following example. On the TI-89 type Y (a key in row 5) and then the number 1. Although the Y key is pressed, it appears as y.)

TI-89 Y= Editor Menus

Take a moment to explore the equation editor toolbar menu. Use the arrow keys to move around and press ESC to exit a menu without making a selection.

Some highlights of how the TI-89 compares with the TI-86 in the equation editor include:
The TI-86 uses icons to indicate graph styles while the TI-89 (F6) uses words, so you cant "see" the style assigned to a function from the editor. The TI-89 has one extra style called Square (like dot style, only it uses little squares). A TI-89 graph is on when a check mark appears to the left of the equation. With the cursor on the y1 line, use F4 to toggle the check (and graph) on and off. Use F5 to turn all functions on or off. The equals sign of selected function on the TI-86 is highlighted. To change the rule for y1(x), either CLEAR the old one and type in something new or else use F3 to copy the old y1(x) rule into the edit line (at the bottom of the screen ) to make revisions.
The Tools menu (F1) includes edit tools (copy, paste, delete, clear all functions) and option 9:Format. The Format dialog box contains many familiar options found in either the Mode or Format menus of the TI-86. A new one is Leading Cursor on/off (try it!). The TI-86 and the TI-89 have the same zoom options except the TI-89 does not have ZOOMX and ZOOMY. The TI-89 does have the SetFactors option.
Window Use Diamond, F2 to see that the window variables are the same as for the TI-86. As with the TI-86, you can either manually set the window variables of the TI-89 and then graph (press Diamond, F3) or else use a built-in zoom option (see menu F2 from both the Window and Y= Editor screens) which sets the window variables and graphs the function(s). Graph the example problem from the previous page using Zoom Decimal, and different graph styles for each function.

TI-89 Graph Menus

Take a moment to explore the graphing screen toolbar menu. Remember to press ESC to exit a menu without making a selection.
Some highlights of how the TI-89 compares with the TI-86 include:
The number of the function appears on the upper right hand corner of the graph screen on both the TI-86 and the TI-89. Trace works the same on both machines. Both allow for user input of x coordinates. The Math Menu (F5) is similar to the Math Menu on the TI-86. The Shade command on the TI-89 (F5, Math, C: Shade)and the TI-86 (Under DRAW in GRAPH) shades the graph between a curve and the x-axis or between two functions within an interval. The TI-89 gives prompts at the bottom of the screen for the bounds whereas the command must be typed with the correct syntax on the home screen of the TI-86. The Draw menu (F6) is available from the graph window on both the TI-86 and the TI-89. Re-graphing (F4)is easy on the TI-89. The graphing Format menu is available from Tools (F1, option 9).

TblSet (Diamond, F4) Table Setup is in a dialog box on the TI-89. Press ENTER to save changes and exit the box. The Graph<->Table option is not available on the TI-86. Table (Diamond, F5) The cell width in a TI-89 table can be changed using F1:Tools from the Table screen and option 9:Format. Possible cell widths are 3 to 12, which result in as many as 7 columns and as few as 2 columns. On the TI-86, tables always have 3 columns of fixed width 6. You can also access Table Setup on the TI-89 by using F2:Setup from the Table screen.

TI-89 Graph-Table

The TI-89s Graph<->Table (selected from TblSet menu), shows the x and y values used to graph the function(s). To split the screen: select Mode, F2 (page 2) Split Screen, 3: Left-Right. Then in the next two lines, change Split 1 App to Graph and Split 2 App to Table (see diagram below). Be sure to press ENTER to save changes as you exit the Mode dialog box. Toggle between the two sides of the screen using 2nd APPS. Re-graph the functions using Zoom Decimal. Change the table cell width to 3 (F1 9:Format) to get a 3 column table. To remove the split screen, either return to the second page of Mode and select Split Screen, 1:Full or an easier way is to press 2nd QUIT twice.
3. Differential Equations
Graphing Solutions to Differential Equations First change the Mode setting for function to DifEq on the TI-86 and option 6:Diff Equation on the TI-89. Enter the following problem and graph using Zoom Decimal.
On the TI-89 the equation editor (Diamond, F1) has a line for the differential equation (y1) followed by a line for the initial conditions (yi1). By default, a slope field is drawn for all first order equations and if initial conditions are not specified, this is all that appears. From Format (F1:Tools, Option 9) the solution method can be selected as either Runge-Kutta (RK) or Eulers method. Also, slope and direction fields can be turned on or off.
One or multiple initial conditions can be entered on the equation editor screen of the TI89. The screens below were created using QI1 = {-1, 1, 2} on the TI-86 and yi1 = {-1, 1, 2}on the TI-89.

Initial conditions can also be entered interactively from the graph screen of the TI-89 using F8: IC. Either type in the t and y values of the initial condition when prompted or else with the direction keys move the cursor to a location on the graph screen and press
ENTER. The middle screen shows the cursor moved to a new initial condition and the third screen shows the resulting solution.
Solving from the Home Screen (TI-89 only) Use F3: Calculus, C:deSolve and the syntax deSolve(equation, independent variable, dependent variable) for a general solution. The @n notation (where n is an integer) is the symbol for an arbitrary constant. When initial conditions are included with the equation, the specific solutions to many first and second order differential equations can be found using the TI-89. To type in the example equations below, use the Y and T keys on the fifth row of the keyboard and the 2nd option of = for the prime mark (once or twice for first or second derivative notation).
deSolve(y=2 and y(2)=7,t,y)
deSolve(y=y and y(0)=3 and y(0)=4,t,y)
For the logistic equation, it is important to input the differential equation with the explicit multiplication symbol between y and (a-y) or else the TI-89 interprets it as the function y evaluated at the argument (a-y).

deSolve(y=y*(a-y),t,y)

4. Matrices Entering Matrices To enter a matrix on the TI-89 choose APPS, 6. Indicate that you are entering a New matrix. On the next screen select 2:Matrix for type, enter a name for the matrix and the size of the matrix.
This will result in a screen showing a matrix of the appropriate size that is filled with zeros. Fill in the matrix with the values (either numerical or variable).
Remember to use the (-) key to the left of the enter key for negative numbers, not the subtraction key. This matrix may also be entered and stored from the entry line of the HOME screen by typing [6, 7, 7; -1, 4, 4; 5, -4, 3] -> m. Note that we are using a numerical example here, but we may also have symbolic entries in the matrix. Matrix Functions The TI-89 has many functions that allow you to manipulate matrices and vectors. Go to the Home Screen. Use the MATH key (2nd, 5)to select 4:Matrix and then det(. Enter the name of the matrix (m) and close the parentheses.
Use the MATH key and appropriate selections to see that mT yields the transpose of m. Evaluate m-1 the inverse (if det(m) 0) by pressing m^ - 1. To get decimal values use , ENTER. Using rref(m) produces row reduced echelon form of a matrix.
Find the eigenvalues and eigenvectors for the matrix m. Note that Complex Format in MODE must be changed from Real to 2:RECTANGULAR since the eigenvalues are complex and non-real. An error message is given when the calculator is in REAL Mode.

5. Numeric Solver Basics Both calculators have similar numeric solvers. (TI-86: use 2nd GRAPH (SOLVER) and TI-89 use APPS, 9:Numeric Solver). On the first screen of Solver, type in the equation of interest. We will explore the volume of a cylinder. Notice that previous equations on the TI-89 can be easily retrieved using F5: Equations.
The next screen of Solver shows the variables and search interval for the solution. After typing in values for all but one variable, position the cursor on the line with the variable whose value is unknown and press F5, SOLVE (TI-86) or press F2:Solve (TI-89). You can type in an optional guess for the variable of interest and the search for the solution will start there.

TI-86, solve for H

TI-86, solve for R

TI-89, solve for h

TI-89, solve for r
Graph View: Some equations have more than one solution. Graphs are often helpful for finding multiple solutions. Press F1, GRAPH on the TI-86. The TI-89 has a split screen (solver and graph) option F3:Graph View. As with all split screens, use 2nd APPS to toggle between the left and right screens.

y1 = f(h) = vol - r2 h

y1 = f(r) = vol - r2 h
The graph uses the value of the left side of the equation minus the right side, as the dependent variable and the variable you are solving for as the independent variable. Volume is linear with respect to the height of a cylinder and quadratic with respect to the radius. For the second screen, height is considered the independent variable and in the last screen the radius is the independent variable (since the cursor is on the radius line in solver). Although the negative solution is not appropriate for this problem, the graph shows the existence of more than one value of r that works. 6. Statistics Regression and Stat Plots To enter data on the TI-89 press APPS 6:Data/Matrix Editor, option 3:New. The next dialog box asks for the type of the variable (data, matrix or list), the name of the folder and the name of the variable. Select data for the type and name it data1. Enter the data shown below. With the cursor on the very top line of the column, name the columns test1 and test2. Take a moment and explore the different toolbar menus, using ESC to exit menus without making a choice. By using the right arrow on the first line of F5: Calculate menu, the 12 different regression models are shown (page down by 2nd down arrow). Select LinReg, set x to c1, y to c2 and Store RegEq to y1(x) and press ENTER as seen in the middle screen below. The regression equation appears and is stored in y1, too.

To define the scatterplot, either use F2:PlotStat or else from the Y= editor (press Diamond, F1), arrow up to Plot1 and press F3:Edit. Enter the information on the first screen below. To graph, use the F2 command 9:ZoomData.
The Statistics Flash Application and List Editor The TI-89 with the Statistics Flash Application and List Editor can be used for descriptive statistics, inferential statistics, and advanced statistics (e.g. hypothesis testing, multiple regression analysis, and 2-way ANOVA). The TI-89 offers the advantage of providing plots (scatter plots, box plots, xy line plots, normal probability plots) as well as the calculations of several distributions and tests.
Inverse functions are also available. The Statistics Flash Application and List Editor is free and can be downloaded from the TI website,
http://education.ti.com/product/tech/89/apps/apps.html.

7. Flash Applications

Extend the life of your TI-89 by electronically upgrading software as new functionality becomes available. The TI-GRAPH LINK accessory is needed to upgrade software. Load powerful APPS on your TI-89 to enhance its basic functionality. You will need the Advanced Mathematics Software Operating System (v 2.0 or higher) which can be downloaded free from the TI website (http://education.ti.com/product/tech/89/apps/apps.html). Calculus, Statistics, and Engineering software is also available. The following TI-89 Calculator Software (APPS) are available. Several are free. CellSheet for the TI-89 Statistics with List Editor Simultaneous Equation Solver Polynomial Root Finder Cabri Geometry for TI-89 The Geometer's Sketchpad Finance for the TI-89
EEPro MEPro EE200 Language Localization Cabri-Specific Localization Statistics with List Editor-Specific Localization Calculus Tools for the TI-89 US Presidents Symbolic Math Guide Problem Sets A beta release of the TI-89/TI-92 Plus Software Development Kit is now available to create your own APPS. StudyCards for the TI-89 and Organizer APPS will be available soon. For more information see http://education.ti.com/product/tech/89/features/features.html and http://education.ti.com/product/tech/89/apps/apps.html 8. Units Conversion A powerful unit conversion utility is part of the TI-89. From the home screen, press 2nd UNITS (above the 3 key). Page up and down in the Units menu using 2nd up or down arrow. The menu shows the categories and pressing the right arrow on a category will show the choice of units. Page 3 of Mode shows the three options for units. The default setting is SI, the international system of units (commonly used by scientists).
Units start with the underscore symbol (Diamond, MODE). The "convert symbol" is a triangle (2nd, MODE). Use the Units menu (or type in directly from the Alpha keys and these symbols) to recreate the screens below. Notice that the TI-89 does unit arithmetic and also converts answers to the default SI units. The third screen illustrates the built-in constants. Constants are the first option on the Units menu.

9. A Comparison of the TI-89/TI-92 Plus and the TI-86 Capabilities: The TI-89 has all the features of the TI-92 (except geometry) and all the improvements found in the TI-92 Plus. These include increased memory (approximately 500K of additional user memory), FLASH memory (which allows electronic upgrades), and advanced mathematical software (differential equations, advanced linear algebra, improved 3-D graphing and more). Compatibility: The TI-89, TI-92 and the TI-92 Plus all use the same viewscreen overhead projection panel. The TI-89 is completely compatible with the TI-92 Plus. This includes exchanging all types of data, information and programs. The TI-89 is compatible with the TI-92 but not completely. For example, it can not send programs to the TI-92 that have TI-89 commands not found on the TI-92. Screen: The TI-89 calculator screen is physically the same size as the TI-86 but the resolution is much better (100 by 160 compared with 64 by 128). For example, the dimensions for the graphing window Zoom Decimal on the TI-89 is [-7.9,7.9] [-3.8,3.8] and for the TI-86 it is [-6.3, 6.3] [-3.1, 3.1]. Features A suite of TI-86 features is being created for the TI-89 in the form of free APPS, including: Polynomial Root Finder Simultaneous Equations Solver Features already built into the TI-89 include Differential Equation Graphing Constants and Conversions Tools for solving a variety of linear algebra problems. Matrix abilities include: eigenvalues, eigenvectors, determinants, ref, rref and more. Find eigenvalues, eigenvectors, functions of matrices (like e A ), and LU or QR decompositions. See more features of the TI-89 at http://education.ti.com/product/tech/89/features/features.html.
Tips for TI-86 Users by Mary Ann Connors