Bowmar Brain

noun

Nickname for the Bowmar 901B, the first American-made pocket calculator.

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Meanings

nounBowmar Brain (plural Bowmar Brains)

plural Bowmar Brains

  1. Nickname for the Bowmar 901B, the first American-made pocket calculator.

    The first one small enough to fit inside a shirt pocket was the Busicom LE-120A Handy, which was introduced in Japan in early 1971, followed months later by the Bowmar 901B, or “Bowmar Brain,” in the United States.

    2012 March 4, Alice Rawsthorn, “Farewell, Pocket Calculator?”, in The New York Times
Cite this entry
APA

Bowmar Brain. (n.d.). In WatkinsX Dictionary. Retrieved November 4, 2026, from https://dictionary.watkinsx.com/word/Bowmar%20Brain

MLA

“Bowmar Brain.” WatkinsX Dictionary, https://dictionary.watkinsx.com/word/Bowmar%20Brain. Accessed November 4, 2026.

Chicago

WatkinsX Dictionary, s.v. “Bowmar Brain,” accessed November 4, 2026, https://dictionary.watkinsx.com/word/Bowmar%20Brain.

Source: Bowmar Brain on Wiktionary, CC BY-SA 4.0.