Casio LC-785 Handheld Electronic Calculator


This credit card-sized, lightweight handheld electronic calculator has an aluminum case and brown plastic keys. In addition to an array of ten digit keys, a decimal point key, and a total key, it has a column of four arithmetic function keys immediately to the right of the digit keys, and a column with a percentage key and three memory keys on the far right. The square root, C (clear), and AC (all clear) keys are left of the digit keys. The on/off switch is next to the AC key.

The eight-digit liquid crystal display is above and to the left of the keyboard. A mark below it reads: CASIO LC-785 (/) ELECTRONIC CALCULATOR. A mark on the back reads: CASIO LC-785B (/) BM MADE IN JAPAN RATING: DC 3V 0.00025W (/) USE BATTERY 1.5Vx2.

A screw on the left side of the back holds it to the front. Unscrewing it reveals the circuitry. A sticker on the inside of the back of the case reads: 1D202A.

The calculator fits in a leather pouch which also has a booklet of instructions printed in English, German, French, Spanish and Italian. A mark on the pouch reads: CASIO.

Several advertisements for the LC-785 appeared in late 1981. None found specifically mentions the LC-785B. The Casio website lists the LC-785 as a product of Casio in 1982.


Washington Post, October 23, 1981, p. B10. This gives a regular price of $13.95 and a sale price of $11.95.

Los Angeles Times, October 31, 1981, p. D3. This gives a regular price of $12.95.

Los Angeles Times, November 29, 1981, p. G26. This gives a regular price of $16.99 and a sale price of $10.99.

Casio website .

Date Made: 1981-1982

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: 1986.0988.187Accession Number: 1986.0988Catalog Number: 1986.0988.187

Object Name: electronic calculatorOther Terms: electronic calculator; Handheld

Physical Description: metal (case; circuitry material)plastic (keys; circuit board material)paper (sticker material)Measurements: overall: 1/8 in x 3 1/2 in x 2 1/2 in; .3175 cm x 8.89 cm x 6.35 cm


Record Id: nmah_334601

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