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Univac 422

The 422 was, for its time, a very small machine and was designed to be cheap and transportable. It was aimed at the education market as a classroom machine.

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The Patty Duke Show - Season 1, Episode 2, "The Genius" (1963)

The 422 is renamed as the Technical Electronic Amplifier Code Handler, or TEACH, and used to calculate the IQ of the school's students.

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Importance: *****
Realism: ***
The use of a 422 in a school is spot on, and the machine is of the right vintage (if anything, it may have been a pre-release demonstration machine), but the IQ test involves the machine interpreting English language responses from the children.

Visibility: ****