Object Details
maker
J.C. Penney Company
Description
This four-function calculator has a tan plastic case, an array of ten oval digit keys, and a decimal point key. It also has four blue arithmetic function keys to the right of these and has clear entry and clear keys to the left. A constant switch is above the clear keys. The on/off switch is on the right above the keyboard. A mark to the left of it reads: JCPenney. The eight-digit LED display is at the back. The back edge has a socket for a power adapter.
A sticker on the back reads: JCPenney (/) Electronic Calculator (/) VOLTAGE 6V CURRENT 0.2A (/) MODEL MM3R SERIAL No. 126131 (/) Made in U.S. A.
This model is similar to the Commodore MM3R and probably was made by Commodore.
J. C. Penney is a chain of American department stores.
Reference:
Guy Ball and Bruce Flamm, The Complete Collector’s Guide to Pocket Calculators, Tustin, CA: Wilson/Barnett, 1997, pp. 81–82.
Location
Currently not on view
Credit Line
Gift of John B. Priser
date made
ca 1975
ID Number
1986.0988.271
catalog number
1986.0988.271
accession number
1986.0988
Object Name
electronic calculator
Physical Description
plastic (case; display cover; keys material)
gallium arsenide (display chips material)
metal (circuitry material)
paper (sticker material)
Measurements
overall: 2.5 cm x 7.4 cm x 10 cm; 31/32 in x 2 29/32 in x 3 15/16 in
place made
United States
See more items in
Medicine and Science: Computers
Computers & Business Machines
Handheld Electronic Calculators
Data Source
National Museum of American History
Link to Original Record
Record ID
nmah_1305804