Sears 728.58850 Handheld Electronic Calculator
date: label: date made
content: ca 1973
name: label: maker
content: Sears, Roebuck and Co.
notes: label: Description
content: This is a relatively early Sears handheld electronic calculator, manufactured by Bowmar/Ali.
label: Description
content: The calculator has a black plastic case with a plastic display window and seventeen square plastic keys with circular tops (actually two keys are rectangular bars). These include nine digit keys, zero and decimal point bars, four arithmetic function keys, a clear entry key, and a clear key. A constant switch is left of the two topmost keys and an on/off switch is to the right of them. Behind the keyboard is a red eight-digit LED display. A mark at the top reads: Sears.
label: Description
content: A jack for a power adapter is on the right side. This example lacks an adapter.
label: Description
content: An "OPERATING OUTLINE" in raised characters on the back of the case gives instructions. A tag at the bottom reads in part: IN ALL CORRESPONDENCE REGARDING THIS ARTICLE ALWAYS MENTION (/) MODEL (/) NUMBER 728.58850 SERIAL (/) NUMBER 251587. It also reads: Made in U.S.A. Four screws hold the back of the case to the front.
label: Description
content: The calculator has a zippered plastic case with a belt loop at the top. Marks on the case read: Sears and: MADE IN (/) U.S.A. The case also contains a paper instruction manual.
label: Description
content: Compare 1986.0988.204 (the Bowmar 905 from 1972). Also compare 1986.0988.362, a Sears 728.58863.
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 Printing, 1997, pp. 35–36, 136.
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: 1986.0988.361
label: catalog number
content: 1986.0988.361
label: accession number
content: 1986.0988
objectType: label: Object Name
content: electronic calculator
physicalDescription: label: Physical Description
content: plastic (case; keys; display cover; carrying case material)
label: Physical Description
content: metal (circuitry; zipper on case material)
label: Physical Description
content: paper (instruction manual material)
label: Measurements
content: overall: 1 3/8 in x 3 in x 5 3/4 in; 3.4925 cm x 7.62 cm x 14.605 cm