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Olivetti Programma 101 (aka P101 or "Perottina")


Museo della Scienza e della Tecnologia "Leonardo da Vinci", CC BY-SA 4.0, via Wikimedia Commons

Type: Desktop programmable calculator

Presentation and Sale Period: Presented in October 1965; sold from 1966 to 1971

Dimensions and Weight: 27.5 (height) x 46.5 (width) x 61 (depth) cm, 35.5 kg

Processor: none

Memory: Estimated capacity of 240 bytes in the Arithmetic Logic Unit

Storage Media: Magnetic card reader/writer

Operating System: none (instruction set for mathematical operations)

Notes: The Programma 101, which is sometimes referred to with the nickname "Perottina" (in honour of Pier Giorgio Perotto, the engineer who led its development team), is one of the first "all in one" desktop programmable calculators. Its design was considered futuristic at the time of its launch. Ten units were bought by NASA, that utilised them to plan the Apollo 11 landing on the Moon.


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