KMC 7500C Handheld Electronic Calculator
date: label: date made
content: ca 1986
notes: label: Description
content: This solar-powered electronic calculator has a tan and gray plastic case and twenty-four plastic keys. Twenty-three keys are square; the addition key is rectangular. In addition to ten digit keys, a decimal point key, a total key, and four arithmetic function keys, the calculator has three memory keys, a change sign key, a square root key, a percentage key, and an on/clear key.
label: Description
content: Behind the keyboard is the solar power cell. Text next to it reads: KMC 7500C. Above this is the eight-digit LCD display. It lights up and the calculator carries out calculations, but the results are not necessarily accurate. Text on the back of the calculator reads: ELECTRONIC CALCULATOR (/) POWER SOURCE SOLAR CELL (/) MADE IN TAIWAN. Unscrewing four screws makes it possible to lift off the back of the calculator. A mark on the circuit board reads: SD9-13.
label: Description
content: According to records of Canadian trademarks, in 1982 Kmart Canada began using the trademark KMC for calculators and other devices sold in its stores. The trademark was registered in 1984 and discontinued in 1999. The KMC mark on the calculator indicates that the trademark is registered. No such trademark, as applied to calculators, is included in the U.S. registry of trademarks. The calculator came to the museum from Canada in 1988. Hence it seems likely that the calculator was distributed by Kmart Canada and made around 1986.
label: Description
content: Reference:
label: Description
content: Web site of the Canadian Intellectual Property Office.
label: Location
content: Currently not on view
place: label: place made
content: Taiwan
setName: label: See more items in
content: Medicine and Science: Computers
label: See more items in
content: Computers & Business Machines
label: See more items in
content: Handheld Electronic Calculators
creditLine: label: Credit Line
content: Gift of Michael R. Williams
dataSource: label: Data Source
content: National Museum of American History
identifier: label: ID Number
content: 1988.0300.01
label: catalog number
content: 1988.0300.01
label: accession number
content: 1988.0300
objectType: label: Object Name
content: electronic calculator
physicalDescription: label: Physical Description
content: plastic (case; keys; display cover material)
label: Physical Description
content: metal (circuitry; screws material)
label: Physical Description
content: gallium arsenide (display circuits material)
label: Measurements
content: average spatial: 1 in x 4 1/4 in x 4 3/4 in; 2.54 cm x 10.795 cm x 12.065 cm