Just a small sample of the programs I have made for the TI-83. I may put my TI-89 programs on later.
None of these programs have ever been publicly released and therefore have not been tested or fine tuned for end users.

• A1111TAX - Date Updated: 5/20/06 This program will basically take the subtotal of something and determine the tax on that item(s). However, the program also does tips. There are a few choices in the main menu. The first is regular California sales tax (7.25% or .0725). The second is 10% tip. The third is 15% tip. The fourth allows the user to enter their own tip amount. The fifth allows the user to enter their own tax percentage.
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• AFINANC - Date Updated: 6/26/06 AFINANC tracks the user's funds in their savings account, checking, and at home. AFINANC can also store your bank account number.
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• AVRG - Date Updated: 5/20/06 AVRG is exactly what it sounds like. The program allows the user to input any number of items until the user inputs 'S'. Then the program takes the final average and shows the values input. While the user is inputing values the program displays a running average and the number of values entered.
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• CShell - Date Updated: 5/20/06 CShell has never been finished. This program was an excercise in futility to make a shell for the TI-83 that emulated the TI-89. The project was pretty much abandoned due to the TI-83 Basic language being so limited. If anyone sees this and likes it let me know I may pick it up again just for you.
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• GAME - Date Updated: 5/20/06 Yes, it was a creative name. Basically this is a game where the object is to move your little "i" to the + sign, but you have to be careful there are a few invisible - signs.
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• LOGDOOM - Date Updated: 5/20/06 LOGDOOM can do logs of a different base, find what log(x) is when it is not given and you know the base and what it equals, and can find a base that is unknown with the answer and log(some number).
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• RANDOMDE - Date Updated: 6/4/06 RANDOMDE generates random numbers with random decimals based on user input. The user can enter any number between 0 and 9 to indicate the number of decimal places following the decimal. The user can also enter what numbers the random generated number with decimals should fall between. For example, between 0 and 1 would be just decimals and between 1 and 2 would have numbers that look 1.xxxx.
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• REMNDR - Date Updated: 5/20/06 This program gives you the remainder. For example, 8/3 = 2 and remainder 2.
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• SPEEDING - Date Updated: 5/20/06 This program takes the speed limit the user inputs and compares driving the speed limit to the speed limit + 10MPH for a distance the user inputs and estimates the time for both and calculates the time the user could save by going 10MPH over the speed limit.
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• SPLITS - Date Updated: 5/30/06 SPLITS allows the user to 1. Convert a lap split (400 m) from the 1600 m into a 1600 m time, 2. Convert a 1600 m time into a lap split (400 m), and 3. Estimate every 400 m in a 1600 m based on a location around the track (anywhere between 1 and 1600 m) and time entered by the user. The program also allows the user to do the same things with the 3200 m.
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• SUBSTR - NOTE: There is a bug in this version. I have to upload the new one. Date Updated: 5/27/06 I just finished the features in the program and it has only been tested a very limited amount for bugs. The purpose of this program is to use one string variable to store many string variables because on the TI-83 there are only ten string variables available. The program itself is more of a concept program that would be used as part of another program, but the way I have designed SUBSTR it could also be used as an address book, a to do list, date book, etc.
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• TUN3UP2 - Date Updated: 5/20/06 This program is basically a house keeper for your TI-83. TUN3UP2 basically returns your calculator's settings back to the way they were when you got the calculator. TUN3UP2 also cleans up the calculator's memory.
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• UNITDOOM2 - Date Updated: 5/20/06 This is a modified version of the original Unitdoom. The original Unitdoom had values for the unit circle. For example, sin(330)=-1/2. The user would input a degree and would be given the sin, cos, tan, etc. for that degree. In Unitdoom2 I have made it so the user can also input radians and unlike the original version of Unitdoom the user can also input degrees of values <0 and >360 as well as values >2(pi).
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• Vagary - Date Updated: 5/20/06 This is an RPG, created by Robert Frost and myself, that needs to have all of the code tweaked so that a memory overflow can be avoided. I know how to do it, but the game is so massive right now it would take weeks.
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