Sperry-Remington 1005-B Electronic Calculator

This small desktop electronic calculator has an array of nine digit keys with a zero bar and a decimal point key below. A total key is on the left, and keys for the arithmetic functions and for cancellation are on the right. Behind the keyboard is a 10-digit vacuum fluorescent display.
The bottom has a cavity that holds five batteries and a red ribbon (the calculator presently has no batteries). A jack for a cord is at the back, but the cord is lacking.
A mark on the front of the machine reads: SPERRY REMINGTON 1005B. A mark on the bottom reads: SPERRY REMINGTON (/) TM (/) BATTERY SUPPLY 1.5Vx5 (/) or use AC ADAPTOR AD-4160 (/) 1W (/) MODEL 1005-B Made in Japan. A tag inside the lid for the battery case reads: 2101730.
Compare Casio-101U. An advertisement for the Casio 101U appeared in New York State in 1975.
Guy Ball and Bruce Flamm, The Complete Collector’s Guide to Pocket Calculators, Tustin, Calif.: Wilson/Barnett Publishing, 1997, pp. 147–148.
For images of the Casio-101U, see the casio-calculator.com museum.
[Advertisement], The Courier, Clinton, New York, April 16, 1975, p. 8.
Currently not on view
Object Name
electronic calculator
date made
ca 1975
Sperry Rand Corporation
Physical Description
plastic (case, keys material)
glass (display material)
metal (wiring material)
overall: 5 cm x 11.7 cm x 17.8 cm; 1 31/32 in x 4 19/32 in x 7 in
place made
Nihon: Nihon
ID Number
catalog number
accession number
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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