Radio Shack EC-250 Handheld Electronic Calculator
date: label: date made
content: ca 1974
name: label: maker
content: Tandy Corporation
notes: label: Description
content: This handheld electronic calculator is one of a series of such calculators introduced by Bowmar in the early 1970s and sold by that company and distributors such as Radio Shack. The calculator has a black plastic case with eighteen plastic keys, sixteen of them square. These include ten digit keys, a decimal point key, four arithmetic function keys, a total key, a percentage key, and a clear/clear entry key. The on/off switch is on the keyboard, the eight-digit display behind this. The plug for the power supply is on the right side. A mark above the display reads: Radio Shack.
label: Description
content: A sticker on the back of the calculator gives operating instructions. It reads in part: Radio Shack EC-250 (/) ELECTRONIC CALCULATOR. It also reads in part: RADIO SHACK A TANDY CORPORATION COMPANY (/) FORT WORTH, TEXAS 76107 (/) ASSEMBLED IN U.S.A. SERIAL NO. 111396. Above the sticker is a compartment for two AA batteries. A mark on the inside of the compartment reads: C905-051.
label: Description
content: Compare 1986.0988.059, a Bowmar MX-55.
label: Description
content: No advertisements found in Radio Shack catalogs.
label: Description
content: Reference:
label: Description
content: Guy Ball and Bruce Flamm, <I>The Complete Collector’s Guide to Pocket Calculators</I>, Tustin, CA: Wilson/Barnett, 1997, p. 120.
label: Location
content: Currently not on view
place: label: place made
content: United States
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 John B. Priser
dataSource: label: Data Source
content: National Museum of American History
identifier: label: ID Number
content: 1986.0988.034
label: catalog number
content: 1986.0988.034
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 (case; keys; display cover material)
label: Physical Description
content: metal (circuitry material)
label: Physical Description
content: paper (sticker material)
label: Measurements
content: overall: 1 1/4 in x 3 in x 5 3/4 in; 3.175 cm x 7.62 cm x 14.605 cm