Calmax M16 Desktop Electronic Calculator

Description
This desktop electronic calculator has a cream-colored plastic case, plastic keys, a glass display window and display tubes, a rubber-covered cord, and metal circuitry. The keyboard has ten digit keys, a decimal point key, a sign change key, four arithmetic function keys, a clear key, two memory keys, and a key for moving to the right or left in the display. Behind the keyboard is an eight-digit vacuum fluorescent display that may be manipulated to show answers with as many as sixteen digits. The cord extends from the back of the machine.
A mark above the display reads: CALMAX M16. A tag on the back of the machine reads: CALMAX (/) AC 115 V 50/60HZ 5W(/) SERIAL No. 02320 MADE IN JAPAN.
Unscrewing four screws opens the case. One board, attached to the top part of the calculator, has a mark that reads: EL-8M. A second board, wired to the bottom, reads: EL-8M-2. One chip is marked: 10580SA (/) 2J 001 (/) SHARP. A second has a mark that reads: 10621SA (/) [. . .] (/) SHARP.
An April 1975 advertisement in the Washington Post indicates that the Calmax M16 desktop calculator with memory then had a sale price of $39.95. The original price is not given.
According to correspondence in the accession file, this calculator was used in the early to mid-1970s at the Washington office of the Institute of Public Administration of New York.
Reference:
Washington Post, April 10, 1975.
Location
Currently not on view
date made
ca 1975
place made
Japan
Physical Description
plastic (case; keys; circuit boards material)
metal (circuitry; screws material)
glass (display window; tubes material)
rubber (cord material)
Measurements
overall: 2 1/2 in x 5 1/2 in x 8 in; 6.35 cm x 13.97 cm x 20.32 cm
ID Number
2006.0132.02
catalog number
2006.0132.02
accession number
2006.0132
subject
Business
See more items in
Medicine and Science: Computers
Desktop Electronic Calculators
Computers & Business Machines
Data Source
National Museum of American History, Kenneth E. Behring Center

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