Sharp Compet 22
Sharp Compet 22
Display is 14 digits, Nixie tubes.
4 functions & memory. The knob at top left of the keyboard sets the fixed position of the decimal point.
The calculator has a socket at the rear for connection to a "memorizer" for converting it to a programmable
calculator (see photograph below). The model 30 memorizer provides 30-program steps and sold for US$305, and the model 60 memorizer provides for 60-program steps and sold for US$444. The memorizers would also work with the
Compet 32, 33, and 50.
280 mm wide, 315 mm deep, 125 mm high (11" x 12.5" x 5"), 4.5 Kg (10 lbs.).
Has one 10" x 9" board and one 10" x 3" board with Medium Scale Integrated Circuits (MSI) in cans.
Advertised in September 1968.
Made in Japan by Hayakawa Electric Company, which changed its name to Sharp Corporation in 1970.
Sharp were (and still are) calculator pioneers, introducing the first Japanese transistorised model and rapidly improving and miniaturising.In 1969 it introduced the first calculator using Large Scale Integrated Circuits (LSI) (QT8-D), followed by the world's first battery portable calculator (QT8-B) and one of the first hand-held calculators (EL-8).
