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.
References:
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.
Our collection database is a work in progress. We may update this record based on further research and review. Learn more about our approach to sharing our collection online.
If you would like to know how you can use content on this page, see the Smithsonian's Terms of Use. If you need to request an image for publication or other use, please visit Rights and Reproductions.