Unisonic 790RM-C Handheld Electronic Calculator
date: label: date made
content: 1976
name: label: maker
content: Unisonic
notes: label: Description
content: This handheld electronic calculator has a metal and plastic case and an array of twenty-five square plastic keys. In addition to ten digit keys and a decimal point key (in white), it has total, four arithmetic function, exchange, change sign, percentage and clear/clear entry keys (in turquoise). In addition it has a square root key and four memory keys (in orange). A mark behind the keyboard reads: Unisonic 790RM. The on/off switch is to the right of this. Behind the keyboard is an eight-digit green vacuum fluorescent display.
label: Description
content: A power jack is on the top edge.
label: Description
content: The back of the calculator has a sticker giving calculation examples. It reads in part: 790RM-C. It also reads in part: SERIAL NO. (/) 127212 (/) MADE IN JAPAN. Below this is a compartment for four AA batteries.
label: Description
content: The calculator has a black plastic sleeve. Also stored in the sleeve is a pamphlet entitled <I>Unisonic 790RM 8 Digit Pocketable Calculator . . . Instruction Manual</I>. Writing on the last page of the manual indicates that the calculator was purchased August 27, 1976.
label: Description
content: Compare 1986.0988.117 (Unisonic 790R-C) and 1986.0988.118 (Unisonic 790RM-C). Similar in general shape of the case are 1986.0988.116 (Unisonic 796-A), 1986.0988.115 (Unisonic 799-A), and 1986.0988.112 (Unisonic 1299R-A).
label: Description
content: The calculator.org website indicates that the Unisonic 790RM was both introduced and discontinued in 1978. It also refers to a Unisonic 790RM-1 introduced in 1975. The MyCalcDB website shows a 1978 Unisonic 790RM, taken apart to show a Texas Instruments chip made in Singapore.
label: Location
content: Currently not on view
place: label: place made
content: Japan
setName: label: See more items in
content: Medicine and Science: Computers
label: See more items in
content: Computers & Business Machines
label: See more items in
content: Handheld Electronic Calculators
creditLine: label: Credit Line
content: Gift of John B. Priser
dataSource: label: Data Source
content: National Museum of American History
identifier: label: ID Number
content: 1986.0988.118
label: accession number
content: 1986.0988
label: catalog number
content: 1986.0988.118
objectType: label: Object Name
content: electronic calculator
label: Other Terms
content: electronic calculator; Handheld
physicalDescription: label: Physical Description
content: plastic (keys; part of case material)
label: Physical Description
content: metal (case; circuitry material)
label: Physical Description
content: glass (display material)
label: Physical Description
content: paper (manual material)
label: Measurements
content: overall: 1 1/4 in x 3 1/2 in x 6 in; 3.175 cm x 8.89 cm x 15.24 cm