TI-84: Monopoly math
Sep 20, 2026 · 1h 16m
Summary
This episode of Version History explores the rise of Texas Instruments' graphing calculators, tracing their evolution from 1960s prototypes to the dominant classroom standard. The hosts discuss how TI secured a near-monopoly by standardizing the interface, lobbying school boards, and partnering with the College Board, effectively locking out competitors like Casio. Personal anecdotes highlight the cultural status of models like the TI-84 Plus and the era of "jailbreaking" devices to play games like Drug Wars. The discussion concludes by examining whether the calculator is a solved problem, …
Topics discussed
Intro: The history of graphing calculators
Hosts' high school calculator memories and mods
Calculators as the precursor to personal computers
The 1960s: TI's Caltech project and early handhelds
Canon Pocketronic and the Japanese-American rivalry
Sinclair and the rise of pocket-sized calculators
TI's 1972 Data Math and market dominance
The debate over calculators in schools
1980s: Scientific models and TI's interface standardization
Jailbreaking and the hacker culture of TI calculators
Student games: Tetris and Drug Wars
The upgrade dilemma and TI's monopoly strategy
TI's ecosystem, lobbying, and interface lock-in
Profit margins and the lack of innovation
Is the TI 84 Plus the perfect design?
TI's failed attempts to mimic smartphones
The Desmos app and the threat to TI's monopoly
Version History Questions: Right idea at the right time?
Peak calculator moments and TI's legacy
Design critiques and the mystery of the TI 84
Hall of Fame criteria: Did TI do something truly new?
Final verdict: Iconic but not Hall of Fame worthy
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