Sears 728.5822 Handheld Electronic Calculator (Sears 5822)

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This handheld electronic calculator has a black plastic case and eighteen square sloping plastic keys (two of which are rectangular). These include nine digit keys, a zero and decimal point bar, four arithmetic function keys, a total key, a % key and a clear/clear entry key. To the right of the three uppermost keys is an on/off switch. A mark above the eight-digit LED display reads: Sears. A jack for a power cord is on the right side.
At the top of the back of the case is a compartment for three AA batteries. A sticker at the bottom of the case reads: SEARS (/) MODEL (/) NO. 728.5822 SERIAL (/) NO. 308598. It also reads: ASSEMBLED (/) IN MEXICO.
This calculator has a slot for a “wood-grained roll top” such as was used on some other Sears calculators of the era. It has no top.
Guy Ball and Bruce Flamm, The Complete Collector’s Guide to Pocket Calculators, Tustin, CA: Wilson/Barnett Printing, 1997, p. 136.
Sears, Roebuck and Co., Sears Spring and Summer 1975 [Catalog], 1975, p. 1094. A Sears 5822C electronic calculator, which looks very much like this one, is advertised as offered for $35.50.
Currently not on view
date made
ca 1975
Sears, Roebuck and Co.
place made
Physical Description
plastic (case; keys material)
metal (circuitry material)
paper (sticker material)
overall: 1 in x 2 1/8 in x 6 1/8 in; 2.54 cm x 5.3975 cm x 15.5575 cm
ID Number
accession number
catalog number
Credit Line
Gift of John B. Priser
See more items in
Medicine and Science: Computers
Handheld Electronic Calculators
Computers & Business Machines
Data Source
National Museum of American History


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