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Fact · Speech recognition

31transistors

IBM says Shoebox's circuitry required only 31 transistors.

Checked against its source on October 17, 2026

In the source's own words

“Shoebox’s small size was made possible by its advanced circuitry. It required only 31 transistors”

Speech recognition (IBM Heritage: Shoebox), IBM, IBM, 2026, Advanced circuitry section.

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What it measures
IBM presents the transistor count as evidence of its compact design, which the company describes as an advance over earlier machines.
What it does not show
A count from the company that built the machine. It says nothing about accuracy.

Source

Cited on

Shoebox needed only 31 transistors | Yap