The TI-59 was the first "real" programmable calculator in the world - you could actually use it to perform some useful work, like solving the system of linear equation, finding the zero of a function or even playing a Hi-Lo game... or the game of chess.

The TI-59 was an amazing calculator for that time: fantastic 960 program steps and up to 100 date registers (nearly 1 kilobyte of RAM), a variety of built-in functions (including advanced statistics), solid-state ROM modules, a magnetic card …

Imagination and competence of the TI-59 owners vastly exceeded the expectations of the TI-59's creators. After many years of research, hardly any of the TI-59 secrets remained hidden under the black calculator's cover. On this page we will put together the most remarkable accomplishments of the TI-59 community.

is back under keyboard control. A listing of the arbitrary contents of registers 50 up to the partition at 59 is shown below. Register Contents This listing was obtained by pressing 50 Register Number When this option is used in a program calculations cease, the requested data register contents are listed

When the venerable Texas Instruments Programmable 59 (TI59) was first released in 1977, it constituted a giant leap in handheld computing power, of similar magnitude to, say, Psion’s first programmable organiser, or the first Palm Pilot, or perhaps the release of the first really usable notebook (Compaq?).

Leading TI-59 publication, successor to the SR-52 Notes. Published 10 issues per year, 16 pages per issue with occasional double issues. Newsletters contained extensive survey articles about TI-59 programming, quirks, hints and programs, mostly math and games.

The king himself - TI-59: PC100C printer: TI-59 and PC100C: Master Library module: Math/Utilities - the most famous TI-59 module: Modules - key to TI-59's success: Accessories: Modules, magnetic cards, etc: TI-59 - high resolution photo (500 KB) TI PPC Notes - the first issue: TI PPC Notes got

Complete TI-59 manual and Master Library Module manual [18-Jul-2006] Did you know that complete TI PPC Notes, SR52 notes and PPX are available (PDF) on Viktor Toth's site ?

As you can imagine, I did not actually build these Web pages in order to become world famous or rich - I had a weekend to spare and the TI-59 was my first love as a computer. So I decided to turn some of the great memories into this site.

Author of many TI-59 articles and programs, including 'Gauss Reduction of Matrices', 'Fast Mode Scribbler' and 'Treasure Island'. Also author of the famous 'TI-59 Super Test' (PPC Notes v7n9p8-11) - can anybody solve that test after all these years?