Casio Pocket-Mini Handheld Electronic Calculator


This compact handheld electronic calculator has a black case with an aluminum front. The keyboard has an array of square plastic keys, including ten digit keys, a decimal point key, a total key, and, to the right of the digit keys, four keys for arithmetic functions. Left of the digit keys are an AC (all clear) key, a clear (entry) key, a percentage key, and a memory key. Behind the keyboard is an eight-digit vacuum fluorescent display. A mark above this reads: CASIO pocket-mini (/) ELECTRONIC CALCULATOR

The on/off switch is on the left side near the top. The socket for an adapter is on the right side near the base.

At the top of the back is a compartment for two AA batteries. A sticker inside the battery compartment reads: 0773177. A mark at the base of the back reads: CASIO pocket-mini (/) BATTERY SUPPLY 1.5Vx2 (/) or use AC ADAPTOR AD-2S (/) 0.2W (/) P-810 MADE IN JAPAN (/) BM CASIO COMPUTER CO. LTD.

The device has a black plastic carrying pouch. A mark on it reads: MADE IN TAIWAN.

A different form of the Pocket-Mini (the CP 801-C), which lacked a memory key, was advertised as new in the May 21, 1975, Chicago Tribune. The P-810 was among the Casio calculators with memory advertised from October 21, 1975. It sold for $19.95. By March 1977 the sale price was $14.95. The web site of Casio Corporation indicates that the calculator was introduced in 1974.


Casio Corporation website.

Chicago Tribune, May 21, 1975, p. 14.

Chicago Tribune, October 21, 1975, p. B3.

Los Angeles Times, October 21, 1975, p. B16.

Chicago Tribune March 2, 1977, p. B8.

Date Made: 1975-1977

Maker: Casio Computer Company

Location: Currently not on view

Place Made: Japan

See more items in: Medicine and Science: Computers, Computers & Business Machines, Handheld Electronic Calculators


Exhibition Location:

Credit Line: Gift of John B. Priser

Data Source: National Museum of American History

Id Number: 1986.0988.186Accession Number: 1986.0988Catalog Number: 1986.0988.186

Object Name: electronic calculatorOther Terms: electronic calculator; Handheld

Physical Description: plastic (case; display cover; keys; circuit board; pouch material)metal (keyboard; circuitry material)Measurements: overall: 3/4 in x 2 1/4 in x 4 in; 1.905 cm x 5.715 cm x 10.16 cm


Record Id: nmah_334600

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