Documentation, 1401/1440/1460 Address Translation Card
name: label: maker
content: IBM
notes: label: Description
content: This translation card assisted programmers converting numerical addresses and machine-code addresses in programs for the IBM 1401, 1440, or 1460. The back of the card has a position guide for reading printouts and a list of card and computer character codes in collating sequence.
label: Description
content: The donor wrote programs for an IBM 1401 and recounted that the IBM 1401 “was the most common machine in business accounting in the 1960s. The 1401 was a character machine, i.e. other machines of the period used a fixed length word ... In fixed word machines, all of the instructions, operands, and data were stored as multiples of the word length. In the 1401, the word length was variable and had to be set by the programmer.” The two instructions to define the word length were, set word mark and clear word mark. The translation card assisted with determining the settings.
label: Description
content: Reference:
label: Description
content: Nonccession file 2015.3097.
label: Location
content: Currently not on view
setName: label: See more items in
content: Medicine and Science: Computers
label: See more items in
content: Computers & Business Machines
creditLine: label: Credit Line
content: Gift of R. Kirk Lubbes
dataSource: label: Data Source
content: National Museum of American History
identifier: label: ID Number
content: 2015.3097.07
label: nonaccession number
content: 2015.3097
label: catalog number
content: 2015.3097.07
objectType: label: Object Name
content: documentation
physicalDescription: label: Physical Description
content: paper (overall material)
label: Measurements
content: overall: .1 cm x 18.7 cm x 8.3 cm; 1/32 in x 7 3/8 in x 3 9/32 in