Appears On
A dual-mode BINGO program that calls random numbers with column letters and prints unique, grid-lined BINGO cards — complete with a FREE center square.
Enter your birthdate and a date range to generate a printed biorhythm chart that plots physical, emotional, and intellectual cycles day by day.
A menu-driven depreciation calculator offering Straight-Line, Sum-of-Years, and Double-Declining Balance methods, plus a side-by-side comparison of all three.
A two-level Nim strategy game where the Expert difficulty uses the mathematically optimal formula to make the computer nearly unbeatable — can you outsmart it?
Enter a loan amount, term, and interest rate to get a fully formatted amortization schedule showing payment-by-payment interest, principal, and balance breakdowns.
A year-by-year lunar phase calculator using real astronomical algorithms, complete with trigonometric corrections and selectable screen or printer output.
Enter any month and year from 1583 onward and watch a graphically drawn monthly calendar grid appear, fully calculated using Zeller's Congruence arithmetic.
A full solar system ephemeris program computes planetary positions, sidereal time, and zodiac coordinates for any date across five centuries of history and future.
A full-featured point-of-sale cash register program with binary search, Shell sort, receipt printing, tax calculation, and tape-based inventory storage.
Predict every solar and lunar eclipse across four millennia using rigorous astronomical math, complete with eclipse type, magnitude, and GMT contact times.
A password-driven cipher program encodes and decodes secret messages using modular arithmetic, with tape storage, printer support, and a self-destruct termination sequence.
A password-driven cipher tool encodes and decodes secret messages using modular arithmetic, with tape save/load, printer output, and a multi-level sub-menu system.
