Archives: TI-83 Plus/TI-84 Plus BASIC Educational Programs
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These programs are for the TI-83+ and TI-84+ calculators, including the 83+ SE and 84+ SE. They are mostly not compatible with the color-screen 84+ CSE or CE variants, but some BASIC programs can be run on all of them.

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  1. Boolean Logic Gate Solver v1.2

    This program helps solve different logic gates, including gates that are not implemented on z80 calculators. Works with 83+/84+/SE. Read the Readme for more info. This update fixes a major bug that breaks the program.

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  2. [Contest #12]CBCRTR

    CBCRTR is a program to teach people the basics of electricity.

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  3. [Contest 12] Element Teacher

    Element teacher is a program that helps you memorize the periodic table! Cemetech Contest 12 entry. That is all.

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  4. Rep Calculator

    This is a WIP, so don't expect miracles!

    This program will work on both color and non-color 83/4s, just send the correct program over!

    This will calculate your 1-10 rep range when given a weight and a rep range.

    Improvements will include calculating percentages and a peak programming calculator.

    I'd also like to add a save function so you can save your weights and potentially track progress!

    Just got back into calc programming, so it might be slow!

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  5. Data unit converter 1.0

    DataUnit v1.0

    It's a data unit converter.

    Bit, Nibble, Byte, Kibibit, Kilobit, Kibibyte, Kilobyte,
    Mebibit, Megabit, Mebibyte, Megabyte, Gibibit, Gigabit,
    Gibibyte, Gigabyte, Tebibit, Terabit, Tebibyte, Terabyte,
    Pebibit, Petabit, Pebibyte, Petabyte, Exbibit, Exabit,
    Exbibyte, Exabyte, Zebibit, Zettabit, Zebibyte, Zettabyte,
    Yobibit, Yottabit, Yobibyte, Yottabyte, Robibit, Ronnabit,
    Robibyte, Ronnabyte, Quebibit, Quettabit, Quebibyte, Quettabyte,
    FDisk 360, FDisk 1.44, CD-1, CD-2, DVD-1, DVD-2, Blu-ray-1,
    Blu-ray-2, PenUSB 128, PenUSB 256

    Compatible with :

    In folder TI-large :
    TI-84+CSE
    TI-84+CE

    In folder TI-small :
    TI-83+
    TI-83+SE
    TI-84+
    TI-84+SE

    Being its intuitive use, there is no need detailed explanations,
    any bug you find, please let me know.

    Thank you.
    CarlosV
    www.gravitasim.com

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  6. OBOB

    OBOB is an abbreviation for "Off By One Bug." Its a bug when programming where your expected result is off by one in either direction.
    This program gives an example of the bug by choosing a random number between 1 and 3 and giving you the input + 1, input - 1, and the input itself respectively.
    This was made to be a joke, but it can also be educational.

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  7. Program Helper (Beta 1.0)

    This is the alpha stage of the program. You can only use the Home, Funct, Funct P.2, Input, Computer to Calculator Linking and Search Bar in the program. If you find anything that I can improve on or any glitches, please, either pm me or go to my forum and reply there: http://www.cemetech.net/forum/viewtopic.php?t=11442.

    IMPORTANT NOTE: You need at least 6687 free in RAM and 21541 free in ARC to run this program!!

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  8. Abacus

    This is an abacus program crammed in under 400 bytes, to both demonstrate the power of an old counting aid and to garner cheap laughs with the irony of emulating an ancient math tool on a modern math tool. This version uses ~150 fewer bytes than the previous one. (RoccoLox Programs gave me useful pointers to figure that out!)

    Uses variables: A, B, C, H, L1, GDB1.

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  9. Basic Program Locker

    Locks programs with a passcode but not very secure.

    Uses about 1500 bytes.

    source code: http://sc.cemetech.net/?hash=ewnJfSF1RpfLPoaJQWJvffpe+Ft/

    source code also in downloaded file

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  10. Advanced Encryption Standard 128-bit (AES128)

    This program performs the forward and reverse encryption of the AES128 algorithm. It's not particularly useful for actual encryption since it takes a long time (5-10 minutes per 128 bits), but it demonstrates the ability of the TI-83/84+ family of being able to perform these complex algorithms using the TI-Basic language. I did my best to optimize for both speed and memory. More information on the algorithm can be found here: https://en.wikipedia.org/wiki/Advanced_Encryption_Standard

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  11. Position 83

    A program to calculate cartesian position on a plane given angle and distance. Shows little arrows on the side for relative position.

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  12. GTime 83

    A program to calculate deceleration, g-force and distance given speed and braking time from the user.

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  13. CPA 83

    A program to calculate the closest-point-of-approach between two vessels at sea. Assumes constant course and speed for both vessels.

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  14. Stopping Distance 83

    A program to calculate safe stopping distance given velocity, reaction time, friction (0.7 standard dry, 0.35 wet) and road grade. Displays distance travelled during reaction, in brake application and total travelled.

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  15. Kickout 83

    Calculates the kickout of a vehicle with an overhang given the overhang, distance from curb/danger and turn in degrees.

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  16. BusPlan 83

    A program to calculate the required number of buses on a route given the trip time, layover percentage and planned headway.

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  17. DENSITY.8xp - Simple Density Calculator with simple chemistry functions. (fixed)

    README

    Hi Cemetech, this is my first upload. This program was written by me in TI-BASIC, and it can work with the TI-84+ line of calculators. I may try to make it compatible with TI-83 later. It can be used to help with calculations in chemistry around Mass, Volume, and Density and % Error. It has a simple menu, and can calculate the following with simple Prompt functions:

    - Density (Finding the density of something by calculating through Mass/Volume)
    - Mass (Finding the mass of something by calculating through Mass/Density)
    - Volume (Finding the volume of something by calculating through Mass/Density)
    - Finding Volume through the Initial Volume and Final Volume
    - % Error (Finding the difference between your experimental value and the accepted value

    Navigating through this program is simple, you can press the number corresponding to the option in the menu, and use the option to calculate something. After your calculation is finished, it will say "press enter" and you will then be sent back to the main menu after pressing ENTER.

    I use it for chemistry class, but I highly advise that people who use this, will still study the equations, and not completely lean on this program for the answers. It is supposed to help with getting work done faster, but it should not be used to do everything for you. It helps me in finding the mass, volume, or density of something after measuring its mass or final/initial volume (which would then give me a volume of the thing I am measuring).

    Update:
    Fixed a calculation error I made. It used to be division, but it was actually multiplication for finding Mass and Volume through density with mass/volume. Sorry for the mistake.

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  18. GDist 83

    A program to calculate deceleration, g-force and time given speed and braking distance from the user.

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  19. Driving 83

    A progam to calculate momentum and kinetic energy based on speed and vehicle weight. Will also convert km/h speed to m/s for interest.

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  20. Hours 83

    A program to calculate hours.minutes length of a shift and can display wage earned. User can edit the program and input their hourly wage on the first line. All times are inputed and displayed in H.mms.

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  21. GForce 83

    A program to calculate deceleration, distance and time given speed and desired g-force from the user.

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  22. Atlas, the definitive World Atlas for TI calculators.

    A World Atlas for your TI-84 Plus CE! (and a stripped-down version for the CSE and monochrome 83+/84+)

    Navigate a world map, zooming in on continents, and selecting a country from different subregions.

    See the country's Name, ISO 3166-1 code, Capital, Population, and a color rendition of the country's flag!

    Data for 250 unique countries is included. For monochrome 83+/84+ calculators (and the CSE), a stripped-down version with no flags or map is available.

    Pure BASIC, no libraries or shell needed.
    Data is as of mid-2025.

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File statistics are updated periodically, so numbers shown in this listing may not agree exactly with those shown on individual files.

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