Summit SL-8M Handheld Electronic Calculator

This handheld electronic calculator has a tan and brown plastic case with twenty-one rectangular plastic keys. These include ten digit keys, a decimal point key, two memory keys, four arithmetic function keys, a total key, a % key, a clear entry key, and a clear key. The 9 key also can be used to set the calculator in “add-mode” for entering numbers with two decimal digits. The on/off switch is on the left side. A tag next to the topmost key reads: SL-8M. A tag along the front edge reads: Summit. Behind the keyboard is an eight-digit red LED display.
The back of the calculator has a silver-colored tag that reads in part: Tm SUMMIT INTERNATIONAL CORP. (/) SALT LAKE CITY, UTAH (/) SERIAL NO. 29422 (/) MODEL SL-8M (/) MADE IN U.S.A. A tag below this seals the battery door. It reads in part: DO NOT REMOVE (/) BATTERY DOOR. Below this is a battery compartment for two N or ½ AA batteries. At the top of the back is a jack for a power supply.
The calculator has a sheet of instructions entitled: SL8M. The instrument fits in a brown leather, cloth-lined zippered case that is marked: Summit.
[Advertisement], Salt Lake City Tribune, April 22, 1976, p. 38. Inventory clearance has offer of Summit SL-8M for $12.88.
Summit International Corporation, Instruction Manual for SL8M Miniature Electronic Calculator, Salt Lake City: Summit. An electronic version of this manual is available at
Currently not on view
Object Name
electronic calculator
date made
ca 1974
Summit International Corporation
Physical Description
plastic (case; keys; display cover material)
metal (circuitry; pouch zipper material)
paper (stickers; instructions material)
leather (pouch material)
overall: 1 1/4 in x 2 5/8 in x 4 3/4 in; 3.175 cm x 6.6675 cm x 12.065 cm
place made
United States: Utah, Salt Lake City
ID Number
catalog number
accession number
See more items in
Medicine and Science: Computers
Handheld Electronic Calculators
Computers & Business Machines
Data Source
National Museum of American History, Kenneth E. Behring Center
Credit Line
Gift of John B. Priser
Additional Media

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