Rockwell 9TR Handheld Electronic Calculator
- Description
- This handheld electronic calculator has a green plastic case and eighteen rounded rectangular plastic keys. In addition to ten digit keys and a decimal point key, it has a clear entry/clear key, four arithmetic function keys, a total key, and a percentage key. A sticker above the keyboard reads in part: nheim. The on/off switch is on the left side. Behind the keyboard is an eight-digit LED display. Text behind the display reads: Rockwell. A jack along the back edge would hold a power adapter.
- The back of the calculator has four feet and a compartment at the top for a nine volt battery. A sticker below this gives operating examples. Text near the bottom reads: Rockwell (/) International Microelectronics . . (/) Anaheim, CA . . . (/) Calculator Model 9TR (/) Assembled in Mexico (/) U.S. and Foreign Parts. Further text reads: Ser. (/) No. 167898.
- According to Ball and Flamm, this model of a Rockwell calculator was especially manufactured for True Value Hardware stores. Compare the Rockwell 8R (1988.0988.12).
- References:
- [Advertisement], Chicago Tribune, August 15, 1975, p. 8. Model 9TR advertised by a True Value hardware store as on sale for $14.88.
- [Advertisement], Chicago Tribune, December 10, 1976, p. 19. Model 9TR advertised by a True Value hardware store as on sale for $7.99.
- Guy Ball and Bruce Flamm, The Complete Collector’s Guide to Pocket Calculators, Tustin, CA: Wilson/Barnett, 1997, p. 126.
- Location
- Currently not on view
- date made
- 1975-1976
- maker
- Rockwell International
- place made
- México
- Physical Description
- plastic (case; keys; display cover material)
- metal (circuitry material)
- paper (sticker material)
- Measurements
- overall: 1 in x 3 in x 6 in; 2.54 cm x 7.62 cm x 15.24 cm
- ID Number
- 1986.0988.015
- catalog number
- 1986.0988.015
- accession number
- 1986.0988
- Credit Line
- Gift of John B. Priser
- See more items in
- Medicine and Science: Computers
- Handheld Electronic Calculators
- Computers & Business Machines
- Data Source
- National Museum of American History
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Emma Tompkins
Thu, 2016-08-04 22:45