Desk Electronic Calculators

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Made in U.S.A. The first models were introduced about 1963/4.

Distinctive features: One of the first transistorised, desktop calculators. The first programmable desktop calculator.

Capabilities - 4 functions, memory, raising to powers. Programmable using a Key-stroke Learn mode.

Display - Results printed on paper tape.

Technology - Employs resistor-transistor logic (RTL).

Youtube has a brief video of a Mathatron in operation at

This machine photographed at the National Museum of Computing, Bletchley Park, UK.


Closeup of the Mathatron showing the paper-tape printer, at top, and the keyboard below.

The Mathatronic is an electronic calculator programmable in a Learning mode. The later Olivetti Programma 101 is often referred to as the first programmable calculator, and is more advanced in that it can store and recall programs using magnetic cards.

Vintage Calculators

© Text & photographs copyright Nigel Tout   2000-2018  except where noted otherwise.