Version History Version History

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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