Bohsei Model 1000 Handheld Electronic Calculator

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This handheld electronic calculator has a light gray plastic case. It has ten digit keys, a decimal point key, four arithmetic function keys, and a total key. The keyboard has special blue squares surrounding the keys for pi, square root, reciprocal, percentage, and clear entry/clear. The four memory keys also have a blue background. The eight-digit green fluorescent display is behind the keyboard. A mark at the top left reads: BOHSEI. A mark immediately above the display reads: MODEL 1000. The on/off swith is on the right side.
The case has a compartment for AA two batteries at the back. A gold-colored paper tag reads: Serial No. (/) 932770 (/) MADE IN HONG KONG. The calculator has a socket for an adapter on the top, but no adapter in this example.
Newspaper advertisements indicate that a printing desktop electronic calculator was sold under the Bohsei name in 1977. A February 1978 advertisement in the Chicago Tribune indicates that the Bohsei Model 1000 was then on sale at a special price of $8.88.
Chicago Tribune, November 24, 1977, p. T12.
Chicago Tribune, February 25, 1978, p. 8.
Currently not on view
date made
ca 1978
place made
Zhonghua: Hong Kong
Physical Description
plastic (case; display window; keys material)
metal (circuitry material)
overall: 7/8 in x 2 3/4 in x 5 1/4 in; 2.2225 cm x 6.985 cm x 13.335 cm
ID Number
catalog number
accession number
Credit Line
Gift of John B. Priser
See more items in
Medicine and Science: Computers
Handheld Electronic Calculators
Computers & Business Machines
Data Source
National Museum of American History


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