Sharp CT-500 Handheld Electronic Calculator
date: label: date made
content: ca 1978
name: label: maker
content: Sharp Corporation
notes: label: Description
content: This compact instrument combines a handheld electronic calculator, an alarm clock telling time in several time zones, and a stop watch. It has a metal case and lid and an array of twenty-four small rectangular plastic keys. Operated as a calculator, it has ten digit keys, a decimal point key, a % key, four arithmetic function keys, a square root key, a clear/clear entry key, three memory keys, a recall key, and an hours/minutes/seconds key. Keys also can be used in “clock” mode to set the location (time zone), time, date, and alarm time, and to turn the alarm on or off. An eight-digit LCD display is behind the keyboard.
label: Description
content: Marks printed on the back of the calculator read in part: ELECTRONIC CALCULATOR (/) CT 500. The also read: SER NO 71063319 BM (/) PRODUCED BY (/) SHARP CORPORATION JAPAN.
label: Description
content: The calculator fits in a plastic case lined with red felt. Text at the base of the front of the case reads: ELSI MATE. Text on the back at the base reads: MADE IN JAPAN.
label: Description
content: Reference:
label: Description
content: [Advertisement], <I>Los Angeles Times</I>, June 25, 1978, p. Y17. Sharp CT-500 “world clock” on sale for $67.95.
label: Location
content: Currently not on view
place: label: place made
content: Japan
setName: label: See more items in
content: Medicine and Science: Computers
label: See more items in
content: Computers & Business Machines
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content: Handheld Electronic Calculators
creditLine: label: Credit Line
content: Gift of John B. Priser
dataSource: label: Data Source
content: National Museum of American History
identifier: label: ID Number
content: 1986.0988.097
label: catalog number
content: 1986.0988.097
label: accession number
content: 1986.0988
objectType: label: Object Name
content: electronic calculator
label: Other Terms
content: electronic calculator; Handheld
physicalDescription: label: Physical Description
content: plastic (keys; carrying case material)
label: Physical Description
content: metal (case material)
label: Physical Description
content: felt (lining for carrying case material)
label: Measurements
content: overall: 1/2 in x 2 1/4 in x 3 in; 1.27 cm x 5.715 cm x 7.62 cm