Summary
The editing control unit connected the program preparation keyboard to the 12 hole paper tape punch and reader that were allotted specifically to the off-line program preparation equipment.
The editing control unit is part of the original equipment designed and built in 1948/9 in Sydney. The socket for the card punch is evidence of that; CSIR Mk 1 (later CSIRAC) first used punch cards for input and output.
The date range (1949-1964) is given to indicate that changes were made to structure and circuitry over the period of CSIRAC's working life.
Inside the rack, a line of six sockets can be seen at the bottom of the vertically mounted chassis that also holds relays and valves. The four larger sockets were connections to the 12 hole paper tape punch, a card punch, a paper tape reader and the keyboard.
(A rack is a metal frame into which modular components (chasses) were bolted. The standard width was 19 inch.)
The lower part of the rack contains a power supply.
Physical Description
Rectangular metal cabinet with rear cover and front cover.
More Information
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Collection Names
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Collecting Areas
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Acquisition Information
Donation from Commonwealth Scientific & Industrial Research Organisation (CSIRO), Frank Hirst - University of Melbourne (The), Mar 1965
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Designer
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Designer
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Commissioned By
Commonwealth Scientific & Industrial Research Organisation (CSIRO), Sydney, Greater Sydney, New South Wales, Australia, 1949-1955
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User
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Classification
Computing & calculating, Digital computing, Editing equipment
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Category
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Discipline
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Type of item
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Overall Dimensions
690 mm (Width), 510 mm (Depth), 1870 mm (Height)
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Exhibition Collection Management
510 mm (Length), 560 mm (Width), 1870 mm (Height)
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Keywords
Computers, Computing, CSIRAC (Computer), Making History - CSIRAC
