One Man’s View of the World
TI85
Programs for the TI-85.
Graph
Sep 30th
This program assumes you have two points and will draw lines to those two points for you. So you might have something like "graph the line at points (3,2),(4,6)". The catch is this program is in a loop to allow for multiple lines to be drawn. Just hit 2nd and quit (or exit) to exit the program and then hit GRAPH to view the lines you made. This is also handy if you need to draw a line across an equaltion already in the grapher.
Foil
Sep 30th
The TI-85s built in solver can solve these types of problems. This program just makes the data entry a little easier.
Error
Sep 30th
Ever get stuck trying to determine the absolute, relative, and percent error? This program is for you.
DecBin
Sep 30th
Convert a decimal number to binary and hex. I'm pretty sure I needed this for Discrete Math and I know I haven't used it since.
Cosecant
Sep 30th
One of several Trig apps. This one displays how to find the cosecant as well as lets you plug the numbers in for the calculator to solve.
Crash
Sep 30th
One of my first game programming books was for the Apple ][e. One of the cool BASIC programs in the book was this skiing game. For some reason, it was cool to punch into the computer and entertaining to play. I ported it over to the TI and added obstacles (see 2nd last menu option – by default they are off but you can easily turn them on). Just use the left/right arrow keys to direct your skier. It keeps track of your score and the highest score.
Clear Axis
Sep 30th
I'm pretty sure there's more productive ways to get rid of the axis and tick marks from within a program. One of my apps needed the axis removed and this program was the brute force result.
Clock
Sep 30th
Well, it could be used as a clock, but its really setup as a timer right now. A few tweaks here and there and you should be able to use this as a clock. For one reason or another, I didn't finish this app all the way. Hit 2nd then ON to exit it. Modify the 350 at line 11 to suit your needs of you calculator (may require some fiddling).
Center Finder
Sep 30th
Use this app to center your text on the TI (default is 40 characters across). Modify the 40 at line 10 to suit your calculator or even your computer. If you are creating an ASCII application on your PC, set it to 80.
Car
Sep 30th
This app attempts to calculate loan information. You will want to modify this one so it fits your needs. It doesn't have a way to input the interest rate. To change it, just modify this line: (FP)/(79/100)\->\MP and change the (79/100) to the desired interest rate.
