Olivetti Elettrosumma 22
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Electric, 12/13 digits, Sterling currency (with Farthings)
The Elettrosumma 22 is a large, heavy-duty add-list machine from the 1950s and 60s. It has 12 places in the keyboard and 13 in the result mechanism. The printing mechanism has another four hand-settable print wheels to the left of the numeric columns. It accommodates paper up to 100mm wide.
This Sterling-currency version has five additional pence keys (1/4, 1/2, 3/4, 10, and 11) located just above the main keypad.
It was introduced in mid-1958, claiming "With a speed of 210 cycles per minute the Elettrosumma 22 is the fastest adding/listing machine yet produced." It was priced at £89 15s Sterling [about US$250].
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This exhibit has a reference ID of CH32643. Please quote this reference ID in any communication with the Centre for Computing History.