Drum And Head Assembly for an IBM 702 Computer
date: label: date made
content: 1955-1965
name: label: maker
content: IBM
label: maker
content: IBM
notes: label: Description
content: The IBM 702 was one of the first electronic computers built by IBM for its business customers (the earlier IBM 701 was designed primarily for scientific calculations. The earlier IBM 650 was directed at business, more popular but less powerful). It was announced in 1953, with deliveries to begin in 1955. Machines delivered in 1955 had cathode ray tube memories, but this provided maintenance difficulties and magnetic core memories replaced these on both installed IBM 702s and those sold in 1956. A successor machine, the IBM 704, quickly replaced it, and sold from 1955 until 1960. Some fourteen examples of the IBM 702 were made. While most of the components of the IBM 702 are from a computer at the Monsanto Chemical Company in St. Louis, Missouri, the drum unit and head assembly (part of an IBM 732) is from one acquired by General Electric Company for use at the Hanford Atomic Products Operation in Richland, Washington. The object is crated and the dimensions given are of this crate.
label: Description
content: References:
label: Description
content: Accession File 1987.0747.
label: Description
content: C.J. Bashe, L.R. Johnson, J.H. Palmer, and E.W. Pugh, <I>IBM's Early Computers</I>, Cambridge: MIT Press, 1989, pp. 173-178.
setName: label: See more items in
content: Medicine and Science: Computers
creditLine: label: Credit Line
content: International Business Machines Corporation
dataSource: label: Data Source
content: National Museum of American History
identifier: label: ID Number
content: 1987.0747.09
label: accession number
content: 1987.0747
label: catalog number
content: 1987.0747.09
objectType: label: Object Name
content: Mainframe Component
physicalDescription: label: Measurements
content: crate: 22 in x 20 1/2 in x 30 in; 55.88 cm x 52.07 cm x 76.2 cm