Bowmar 90911 Handheld Electronic Calculator

This four-function handheld electronic calculator has a black plastic case and black keys. In addition to ten digit keys and a decimal point key, it has clear, total, clear entry, and four arithmetic function keys. The on/off switch is to the right on the top row of keys. Behind the keyboard is an eight-digit LED display. A black plastic cover fits over the keyboard and display. A mark behind the display reads: Bowmar. A plug for the power supply is on the right.
The back of the calculator has a compartment for three AA batteries at the top. A sticker at the bottom reads: MODEL 90911 SERIAL (/) NUMBER 178970 (/) Bowmar/ ALI Inc. Acton, Mass. 01720 U.S.A. (/) Assembled in MEXICO Patent Pending.
Compare 1986.0988.207, which has somewhat more functions but a similar design. For references on Bowmar, see 1986.0988.106.
Bowmar introduced a calculator in 1971, and had successful sales in 1972 and 1973. Assembly began in Mexico in mid-1974. The company went bankrupt in February of 1975 and stopped building calculators in the middle of that year. By 1976 distribution of Bowmar calculators had been taken over by Continental Microsystems.
No advertisements for this particular model have been found.
Currently not on view
Object Name
electronic calculator
date made
Physical Description
plastic (case; display; cover material)
metal (circuitry material)
paper (sticker material)
overall: 7/8 in x 2 3/4 in x 5 3/4 in; 2.2225 cm x 6.985 cm x 14.605 cm
place made
ID Number
catalog number
accession number
Handheld Electronic Calculators
Computers & Business Machines
See more items in
Medicine and Science: Computers
Handheld Electronic Calculators
Data Source
National Museum of American History, Kenneth E. Behring Center
Credit Line
Gift of John B. Priser
Additional Media

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