Marchant Calculating Machine, Experimental
date: label: date made
content: ca 1958
name: label: maker
content: Marchant Calculating Machine Company
notes: label: Description
content: In the 1950s several manufacturers of full-keyboard adding and calculating machines began to experiment with building machines that had only ten digit keys, carried out all four arithmetic operations, and printed the results. This is an experimental ten-key printing electric calculating machine made by Marchant.
label: Description
content: The model has three rows of discs above the keyboard. The first row has nine wheels that show the number entered (only two of these wheels show numbers at present) on a ten-key keyboard. The second row has the 18 wheels for a result register, and the uppermost row has the ten wheels of a revolution counter. There are holes below the registers for decimal markers. The first row of discs shifts as numbers are entered.
label: Description
content: The machine has a metal case painted two shades of green and keys in two other shades of green. Right of the number keys are negative multiplication, multiplication, shift, and clear keys. To the left are subtraction, repeat, and addition bars, and dividend, divide, and stop keys. Further to the left is a place for a paper tape, as well as LIST, CALC, subtotal, and total keys. Eleven discs print results. The plastic cover is black.
label: Description
content: The front, back and cover have marks that read: MARCHANT. The digit keys read: 7 8 9 (/) 4 5 6 (/) 1 2 3 (/) 0.
label: Location
content: Currently not on view
place: label: place made
content: United States: California, Oakland
topic: label: Subject
content: Mathematics
setName: label: See more items in
content: Medicine and Science: Mathematics
label: See more items in
content: Calculating Machines
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content: Science & Mathematics
creditLine: label: Credit Line
content: Gift of SCM Corporation, Business Equipment Division
dataSource: label: Data Source
content: National Museum of American History
identifier: label: ID Number
content: MA.335374
label: catalog number
content: 335374
label: accession number
content: 318944
objectType: label: Object Name
content: calculating machine
physicalDescription: label: Physical Description
content: metal (overall material)
label: Physical Description
content: plastic (overall material)
label: Measurements
content: overall: 18 cm x 38 cm x 34.5 cm; 7 3/32 in x 14 31/32 in x 13 19/32 in