Anita Mark VIII Desktop Electronic Calculator with Manuals
date: label: date made
content: ca 1961
name: label: maker
content: Sumlock Comptometer LTD
notes: label: Description
content: According to the accompanying instruction book, this is “the world’s first electronic desk calculator.” The full-keyboard, non-printing calculator has ten columns of plastic keys and shows 12-digit results. A column of keys for multiplication is on the left. Keys for arithmetic operations and for clearance are at the front. The machine used vacuum tubes—later electronic calculators would have transistors and then microchips.
label: Description
content: The Anita Mark VIII was one of two electronic calculators developed by the British Bell Punch Company in a team led by Norbert Kitz. Kitz had obtained an advanced degree in computer science at the University of London in 1951, studying under computer pioneer Andrew Booth. He applied for a patent for an “electronic calculating machine” as early as 1957. By 1961, Bell Punch exhibited its Mark VII and Mark VIII electronic calculators at trade fairs.
label: Description
content: A mark on the front of the machine read: ANITA. A tag on the bottom reads near the top: MODEL NO. C/VII/I006852/A. The tag also includes an extensive list of patent and patent application numbers. The last British patent listed is 868761, which was issued May 25, 1961. A mark on the plastic cover for the machine reads: ANITA
label: Description
content: The operating instructions for the Mark VIII received with the machine were distributed by the Inter-Continental Trading Corporation of New York, N.Y. Also received with the machine is a booklet of operating instructions for the Anita Mark 9, a similar machine.
label: Description
content: Norbert Kitz filed for a U.S. patent for this machine December 9, 1961(he had filed for earlier U.S. patents in 1957 and 1959), and was granted it October 18, 1966.
label: Description
content: References:
label: Description
content: Norbert Kitz, "Key Controlled Decimal Electronic Calculating Machine," U.S. Patent 3,280,315, October 18, 1966. There are extensive online discussions of the Anita electronic calculators.
label: Location
content: Currently not on view
place: label: place made
content: United Kingdom
topic: label: Subject
content: Business
setName: label: See more items in
content: Medicine and Science: Computers
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content: Computers & Business Machines
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content: Desktop Electronic Calculators
creditLine: label: Credit Line
content: In Memory of Eston C. and Gertrude S. Farrell
dataSource: label: Data Source
content: National Museum of American History
identifier: label: ID Number
content: 1999.0143.01
label: accession number
content: 1999.0143
label: catalog number
content: 1999.0143.01
objectType: label: Object Name
content: electronic desktop calculator
physicalDescription: label: Physical Description
content: metal (cover material)
label: Physical Description
content: plastic (keys material)
label: Physical Description
content: glass (components material)
label: Measurements
content: overall: 24.4 cm x 36.8 cm x 44.5 cm; 9 19/32 in x 14 1/2 in x 17 17/32 in