Programma 101

The Olivetti Programma 101, also known as Perottina or P101, is one of the first all in one commercial desktop programmable calculators, though not the first. It was produced by the Italian manufacturer Olivetti, based in Ivrea, Piedmont, and was invented by the engineer Pier Giorgio Perotto. The Programma 101 used many features of the large computers of its period, and its instruction set, which allowed for a conditional jump, qualifies it as a stored program computer even though it is usually called a printing programmable calculator or desktop calculator. It was launched at the 1964 New York World's Fair, with volume production starting in 1965. About 44,000 units were sold, primarily in the United States, at a price of 3,200 dollars. This description is adapted from Wikipedia contributors under CC BY-SA 4.0; changes were made. https://creativecommons.org/licenses/by-sa/4.0/