Craig 4501 Handheld Electronic Calculator

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This handheld electronic calculator has a gray and charcoal case and an array of black "Klixon" keys. Such keys have a design trademarked by Texas Instruments and make a distinctive click when pressed. In addition to ten digit and one decimal point key, there are four keys for arithmetic functions. One serves as a total key for addition and another as a difference key for subtraction. The top of the keyboard has a constant switch, a D key for recalling the display (it turns off after fifteen seconds), a clear entry key, and a red clear key. The on/off switch is behind the clear key. A mark next to it reads: CRAIG. The eight-digit red LED display is behind this. A cord for recharging the battery attaches at the back of the top. (This example has no cord.)
The back has four plastic feet. A metal plate there gives operating instructions. Text near the bottom of it reads: CRAIG MODEL 4501 (/) SER NO 13330 (/) CRAIG CORPORATION COMPTON, CALIF. 90220 (/) MADE IN U.S.A. Stamped in ink on the bottom of the back are numbers which may be: 33 72 13. A mark scratched on the instruction plate reads: ZDENEK.
Ball & Flamm give a 1971 sale price as $239.95.
This calculator was made and sold as by Bowmar/Ali as the Bowmar 901B. Compare 1986.0988.129.
Guy Ball and Bruce Flamm, The Complete Collector's Guide to Pocket Calculators, Tustin, CA: Wilson/Barnett, 1997, p.37, 63.
Currently not on view
date made
ca 1972
Craig Corporation
place made
United States
Physical Description
plastic (case; display window; keys material)
metal (circuitry; keyboard; plaque material)
overall: 1 1/2 in x 3 in x 5 1/4 in; 3.81 cm x 7.62 cm x 13.335 cm
ID Number
accession number
catalog 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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