Programma 101

<p>The Olivetti Programma 101, also known as Perottina or P101, is one of the first "all in one" commercial desktop <a href="/facts/Programmable_calculator/5UHx9nIg">programmable calculators</a>, although not the first.
Produced by Italian manufacturer <a href="/facts/Olivetti/bdoq8XPH">Olivetti</a>, based in <a href="/facts/Ivrea/ESGAEUGm">Ivrea</a>, <a href="/facts/Piedmont/K6f2ELPS">Piedmont</a>, and invented by the Italian engineer <a href="/facts/Pier_Giorgio_Perotto/7U5l41fY">Pier Giorgio Perotto</a>, the P101 used many features of large computers of that period. It was launched at the <a href="/facts/1964_New_York_World%2527s_Fair/jKDrw9bk">1964 New York World's Fair</a>; volume production started in 1965. A <a href="/facts/Futurism/B6eQPHN2">futuristic</a> design for its time, the Programma 101 was priced at $3,200
(equivalent to $31,900 in 2024).
About 44,000 units were sold, primarily in the US.
</p><p>It is usually called a printing <a href="/facts/Programmable_calculator/5UHx9nIg">programmable calculator</a> or desktop <a href="/facts/Calculator/eeLfRS8L">calculator</a> because its arithmetic instructions correspond to calculator operations, while its <a href="/facts/Instruction_set/8p8vwUeE">instruction set</a> (which allows for conditional jump) and structure qualifies it as a <a href="/facts/Stored-program_computer/CwcIk5S8">stored-program computer</a>.
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Programma 101 open-in-new

Programma 101