Punch Cards used with a PDP-9 Minicomputer

Punch Cards used with a PDP-9 Minicomputer

Usage conditions apply
In the mid-1960s, the Computer Science Department at RAND Corporation turned its attention to developing computer graphics. A set of programs written in the programming language FORTRAN for the PDP-9 minicomputer were used to plot contour lines useful in determining the line of sight for microwave radiation emitted from a given point on a map. These cards have some of the data for one of these programs. The cards are white with a pink border on the top (occasional cards have a green border). Groups of cards are not numbered but groups of data are designated by black marks on the edge. A mark on the first card reads: 3000 500. A printout of a related program has non-accession number 1990.3046.10.
Currently not on view
Object Name
punched cards, set of
date made
Place Made
United States: California, Santa Monica
Physical Description
paper (overall material)
overall: 8.3 cm x 18.8 cm x 3.1 cm; 3 1/4 in x 7 3/8 in x 1 1/4 in
ID Number
catalog number
nonaccession number
Credit Line
Gift of Paul Baran and W. L. Doyle
See more items in
Medicine and Science: Computers
Computers & Business Machines
Punch Cards
Data Source
National Museum of American History
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