Math Matic 915 Handheld Electronic Calculator

This handheld electronic calculator has a black plastic case and sixteen oval plastic keys. In addition to an array of ten digit keys and a decimal point key, it has a clear key, four function keys, and a total key, The on/off switch is to the left of the clear key. A sticker between them reads: 915. Behind the keyboard is an eight-digit red LED display.
The back of the calculator has a battery compartment at the bottom. A sticker on the compartment door reads: BATTERY DOOR (/) PRESS HERE (/) MFG. BY (/) MATH MATIC (/) HAMDEN, CONN. (/) 06518 (/) 85939 (/) MADE IN U.S.A. A jack for a power adapter is just above the center of the back.
The calculator has a black plastic carrying pouch.
A December 1976, newspaper column reports that a consumer purchased two Math Matic 915 calculators in May of that year.
“Helpmate,” Hammond Times, December 17, 1976, p. 41.
Currently not on view
Object Name
electronic calculator
date made
ca 1976
Macmillan Company
Physical Description
plastic (case; keys; display cover; carrying pouch material)
metal (circuitry material)
paper (stickers material)
overall: 1 in x 2 1/2 in x 4 1/2 in; 2.54 cm x 6.35 cm x 11.43 cm
place made
United States: Connecticut, Hamden
ID Number
catalog number
accession number
Computers & Business Machines
Handheld Electronic Calculators
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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