Monroe EPIC 3000 Electronic Calculator

Monroe EPIC 3000 Electronic Calculator

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In 1966, Monroe International, Inc., a descendent of the Monroe Calculating Machine Company and a division of Litton Industries, introduced its EPIC electronic programmable printing calculator. The device includes a desktop keyboard and printing unit, and an attached calculating unit that sits on the floor. It has transistors, but not microprocessors.
At the center of the desktop part of the machine is an array of nine digit keys with a 0 bar below it. To the right of these keys are function keys for the four arithmetic operations as well as a square root key and enter and print bars. To the left of the digit keys are keys for start, decimal point placement, interchange of the contents of two registers, repeat, and other operations. The printing mechanism is behind the keyboard. It displayed entries as well as the answer. A mark next to the paper tape reads: EPIC 3000. A mark below this reads: MONROE li.
Monroe also sold a similar electronic calculator called the EPIC 2000.
The calculator was given to the Museum by George C. Davis, who apparently used it in work as a consulting engineer in radio and television in Washington, D.C.
Accession file, instructions 1983.0471.03.
Personal Communication, Monroe Systems for Business.
Vintage Calculators Web Museum.
Currently not on view
Object Name
electronic calculator
date made
Monroe International Corporation
Physical Description
plastic (overall material)
metal (overall material)
paper (overall material)
calculator: 23 cm x 30.6 cm x 38.3 cm; 9 1/16 in x 12 1/16 in x 15 1/16 in
computing unit: 53.5 cm x 51 cm x 21 cm; 21 1/16 in x 20 1/16 in x 8 1/4 in
ID Number
accession number
catalog number
Credit Line
Gift of George C. Davis
See more items in
Medicine and Science: Computers
Desktop Electronic Calculators
Computers & Business Machines
Data Source
National Museum of American History
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