Radio Shack EC-225 Handheld Electronic Calculator (Earlier Version)
date: label: date made
content: ca 1973
name: label: maker
content: Tandy Corporation
notes: label: Description
content: This handheld electronic calculator has a tan and brown plastic case and an array of fifteen keys, most of them square. These include ten digit keys, a decimal point key, four arithmetic function keys, a total key, a constant key and a cancel key. The on/off switch is behind the keys at the left. Text next to it reads: Radio Shack. Behind this is an eight-digit red LED display.
label: Description
content: At the top is a space for four AA batteries. A jack for a power adapter is on the back edge.
label: Description
content: The back of the calculator has four molded feet, as well as extensive operating instructions that are also molded into the plastic. The text reads in part: FOR DC OPERATION: USE 4 TYPE AA BATTERIES (/) FOR AC OPERATION USE ONLY CAT. NO. 13-854 (/) Made in Canada for (/) RADIO SHACK, A TANDY CORPORATIONCOMPANY (/) FORT WORTH, TEXAS, 76107 (/) RADIO SHACK MODEL EC-225. A tag toward the bottom reads: BASE PLATE NUMBER (/) 999035693.
label: Description
content: Radio Shack sold at least two calculators under the model EC-225 number. This is the first of them, made by the Canadian firm of General Instrument. Compare to the General EZ-2000 calculator. A second Radio Shack calculator with model number EC-225 is shown in the 1979 Radio Shack catalog and was introduced as new in a December 1979 <I>Washington Post</I> advertisement.
label: Description
content: Compare Victor 95 (1986.0988.247).
label: Description
content: References:
label: Description
content: Guy Ball and Bruce Flamm, <I>The Complete Collector’s Guide to Pocket Calculators</I>, Tustin, CA: Wilson/Barnett, 1997, p. 72, 119.
label: Description
content: Radio Shack, A Tandy Company, <i>1979 Catalog No. 302</i>, p. 129, accessed September 22, 2014, at radioshackcatalogs.com. The price listed for the calculator—not this EC-225—is $17.95.
label: Description
content: [Advertisement], <I>Washington Post</I>, December 16, 1976, p. VA_12. This is also the second form of the EC-225.
label: Location
content: Currently not on view
place: label: place made
content: Canada
setName: label: See more items in
content: Medicine and Science: Computers
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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: 1986.0988.039
label: catalog number
content: 1986.0988.039
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; display cover; keys material)
label: Physical Description
content: metal (circuitry material)
label: Measurements
content: overall: 1 in x 3 in x 6 in; 2.54 cm x 7.62 cm x 15.24 cm