Commodore Minuteman 2 Handheld Electronic Calculator

This handheld electronic calculator has a white case with black trim and metal keyboard, and an array of square 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, the calculator has four keys for arithmetic functions. One serves as a total key for addition, another as a difference key for subtraction. The top of the keyboard has a constant switch, a clear entry key, and a red clear key. The on/off switch is below the keyboard. The text next to it reads: commodore (/) Minuteman 2.
The eight-digit red LED display is behind the keyboard. 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 reads: COMMODORE (/) MODEL MM-2 SER. NO. R216527 (/) SANTA CLARA, CALIFORNIA (/) MADE IN U.S.A.
This was one of the first models of a handheld calculator sold by Commodore. It was manufactured by Bowmar/Ali and is similar to the Bowmar 901B.
Compare 1986.0988.099 (the Commodore Minuteman 1) and 1988.0988.129 (the Bowmar 901B).
Guy Ball and Bruce Flamm, The Complete Collector’s Guide to Pocket Calculators, Tustin, CA: Wilson/Barnett, 1997, p. 57.
New York Times, December 19, 1972, p. 26. Advertisement indicates that the Minuteman 2 had a regular price of $179, sale price of $92.
New York Times, February 13, 1973, p. 6. Minuteman 2 has a regular price of $179 and a sale price of $79.
Los Angeles Times, February 22, 1974, P. A2 – Commodore MM2 calculator listed as on sale for $69.95, marked down from an original price of $99.50.
Currently not on view
Object Name
electronic calculator
date made
Commodore Business Machines, Inc.
Physical Description
plastic (case; display cover; keys material)
glass (tube material)
metal (circuitry; screws; keyboard material)
overall: 1 3/4 in x 3 1/2 in x 6 in; 4.445 cm x 8.89 cm x 15.24 cm
place made
United States
ID Number
catalog number
accession number
See more items in
Medicine and Science: Computers
Handheld Electronic Calculators
Computers & Business Machines
Data Source
National Museum of American History, Kenneth E. Behring Center
Credit Line
Gift of John B. Priser
Additional Media

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