TI 84 Plus CE-T Python Apps

Small (Circuit)Python programs that run on a TI-84 Plus CE-T Python Edition calculator. As storage is limited on these calculators, the programs might not be beautifully formatted.

What is CircuitPython?

Excerpt from manual:

"TI-Python is based on CircuitPython, a variant of Python designed to fit in small microcontrollers. The original CircuitPython implementation has been adapted for use by TI."

What can it do?

App	Description	Functions
BASES	Simple conversion functions	db: decimal to binary conversion bd: binary to decimal conversion
EULPHI	Euler's totient function to find number of co-primes	phi: Euler's totient function $\varphi (n)$ or $\phi(n)$ gcd: Euclidean algorithm mod: modulo calculations
MODARIT	Modular arithmetic	egcd: extended Euclidean algorithm mod: modulo calculations (remainder) modinv: modulo inverse calculations mmodinv: modulo inverse matrix calculations
PMODARIT	Binary polynomial arithmetic	p_mod: Binary polynomial modulus p_divmod: Binary polynomial division p_mul: Binary polynomial multiplication p_exp: Binary polynomial exponentiation by squaring p_gcd: Binary polynomial Euclidean algorithm p_egcd: Binary polynomial extended Euclidean algorithm p_mul_mod: Binary polynomial modular multiplicative p_mul_inv: Binary polynomial modular multiplicative inverse

How can I use it?

0. Make sure you have TI Connect installed on your computer. Homebrew users can use brew install ti-connect-ce.
1. Download this repo.
2. Connect your calculator with your computer.
3. Use TI Connect to upload the app files you need (e.g. MODARIT.py) to your calculator. The [NAME]_Test.py files serve only testing purposes during development and are not meant to use on your calculator.
4. The app should now be listed in your calculator's app inventory, ready to interact with.