Rockwell 18R Handheld Electronic Calculator

This handheld electronic calculator has a dark brown and light tan plastic case and twenty 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, a percentage key, and two memory keys. A mark above the keyboard reads: MEMORY. The on/off switch is on the left side. Behind the keyboard is an eight-digit LED display. Text left behind the display reads: Rockwell. A mark scratched above this reads: WO305406. 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 Product Division (/) Anaheim, CA 92803. Further text reads: Calculator Model 18R (/) Assembled in Mexico (/) U.S. and Foreign Parts. Further text reads: Ser [sic] (/) No. 144265.

The calculator has a plastic carrying case marked on the front: Rockwell.

References:

[Advertisement], Chicago Tribune, December 4, 1975, p. A6. Rockwell 18R advertised as selling for $19.88.

[Advertisement], Los Angeles Times, February 15, 1976, p. A12. Rockwell 18R advertised as selling for $13.88.

[Advertisement], Washington Post, February 11, 1977, p. C24. Rockwell 18R advertised as selling for $9.77.

Currently not on view