Sperry-Remington 1005-B Electronic Calculator

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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
date made
ca 1975
Sperry Rand Corporation
place made
Nihon: Nihon
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
ID Number
catalog number
accession number
Credit Line
Gift of John B. Priser
See more items in
Medicine and Science: Computers
Desktop Electronic Calculators
Computers & Business Machines
Data Source
National Museum of American History


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