Commodore MM2PM Handheld Electronic Calculator

This handheld electronic calculator has a white case with black trim and metal keyboard, and an array of twenty-three oval plastic keys. In addition to ten digit keys and one decimal point key, the calculator has four keys for arithmetic functions and a total key. In addition there are four memory keys, a percentage key, an exchange key, and a clear key. The on/off switch is at the right on the top row of keys. Text above the keyboard reads: commodore.
The ten-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 of the case has no tag.
Unscrewing four screws in the back of the device allows one to open the case. A mark on the chip reads: LC1552B (/) 7411. This chip is associated with Western Digital.
Compare 1986.0988.100 and 1986.0988.128.
Guy Ball and Bruce Flamm, The Complete Collector’s Guide to Pocket Calculators, Tustin, CA: Wilson/Barnett, 1997, p. 58.
Currently not on view
Object Name
electronic calculator
date made
Commodore Business Machines, Inc.
Physical Description
plastic (case; keys; display cover material)
glass (tube material)
metal (circuitry material)
overall: 1 1/4 in x 3 1/2 in x 6 in; 3.175 cm x 8.89 cm x 15.24 cm
place made
United States
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

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