Sharp EL-500 Handheld Electronic Calculator
date: label: date made
content: 1977-1978
name: label: maker
content: Sharp Corporation
notes: label: Description
content: This handheld electronic calculator has a plastic case and thirty-five rectangular plastic keys. The four lower rows of keys are similar to those found on many calculators, with ten digit keys, a change sign key, a decimal point key, four arithmetic function keys, three memory keys, and a total key. The next row up on the scientific calculator contains keys for various forms of exponents and logarithms, as well as a pi key. The next row up (just below the top row of keys) contains a key for converting from degrees, minutes, and seconds to decimal degrees, as well as keys for trigonometric and inverse trigonometric functions. The top row of keys includes keys for powers, reciprocals, square roots, clear entry, and clear. A mark above the keyboard reads: SHARP.
label: Description
content: Behind the keyboard is a green fluorescent display that shows the result, up to a six-digit mantissa and a two-digit exponent (as a power of ten). Text above the display reads: SHARP ELSI MATE (/) EL-500. A jack for a power adapter is along the back edge. The on/off switch is on the left side.
label: Description
content: The back of the calculator has a compartment for two slim batteries. A sticker inside it reads: 72406257.Text below this reads in part: ELECTRONIC CALCULATOR (/) EL-500. It also reads in part: SHARP CORPORATION (/) MADE IN JAPAN BM.
label: Description
content: References:
label: Description
content: [Advertisement], <I>Los Angeles Times</I>, March 27, 1977, p. X1. On sale for $14.95
label: Description
content: [Advertisement], <I>Washington Post</I>, January 20, 1978, p. A23. Calculator selling for $14.77.
label: Description
content: A copy for the manual for this calculator, without the cover, is online at wass.net/manuals, accessed October 27, 2014.
label: Location
content: Currently not on view
place: label: place made
content: Japan
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: 1986.0988.138
label: catalog number
content: 1986.0988.138
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 metalmaterial)
label: Measurements
content: overall: 1 in x 3 1/8 in x 5 3/8 in; 2.54 cm x 7.9375 cm x 13.6525 cm