Unisonic 830-A Handheld Electronic Calculator


This handheld electronic calculator has a black- and silver-colored plastic and metal case with an array of twenty-one square plastic keys. These include ten digit keys and a decimal point key (white) as well as four arithmetic function keys, a total key, a clear key, a clear entry key, and a percentage key (turquoise). The square root and change sign keys in the topmost row are orange. Right of these, a mark scratched on the case reads: UNISONIC-830A. Right of this is an on/off switch. Behind is an eight-digit green vacuum fluorescent display. A power jack is on the back edge.

A paper sticker on the back gives calculation examples. It reads in part: 830A. It also reads: SERIAL NO. (/) 004991 (/) MADE IN JAPAN. Below this is a compartment for four 1.5V (AAA) batteries.

Compare 1986.0988.114 (a Unisonic 811-A). That calculator lacks the square root and change sign keys.

No references found.

Date Made: ca 1977

Maker: Unisonic

Location: Currently not on view

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: 1986.0988.113Accession Number: 1986.0988Catalog Number: 1986.0988.113

Object Name: electronic calculatorOther Terms: electronic calculator; Handheld

Physical Description: plastic (case; keys material)metal (trim; circuitry material)glass (display material)paper (sticker material)Measurements: overall: 1 1/8 in x 3 1/4 in x 5 1/4 in; 2.8575 cm x 8.255 cm x 13.335 cm

Guid: http://n2t.net/ark:/65665/ng49ca746b2-af9d-704b-e053-15f76fa0b4fa

Record Id: nmah_334527

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