Summary
Photograph of a computer diagram entitled "ALL HARD VALVE LOGIC + GERMANIUM DIODES". Diagram shows the layout of components in a LEO 1 computer. The LEO (Lyons Electronic Office) computer began operating in 1951 and was used in bakery management by the J. Lyons Company in the United Kingdom. This was the first business application to run on a stored-program computer.
This is one of a set of photographs showing computers, computer components, computer structure diagrams and computer programmimg instructions, probably used as aids in teaching computing subjects. The diagrams and instructions relate to several pioneer models and systems of stored program computers dating back as far as the 1950s and including CSIRAC (originally known as CSIR Mark 1), Cirrus, Atlas, IBM System/360 , CDC 6600 System, and Illiac IV.
Description of Content
Block diagram showing the structure of the LEO 1 computer.
Physical Description
Black and white photograph of a computing block diagram.
More Information
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Collection Names
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Collecting Areas
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Acquisition Information
Donation from Steve & Connie Kormas, 22 Feb 2001
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Creator
Dr Trevor Pearcey, Melbourne, Greater Melbourne, Victoria, Australia, 1950s-1960s
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Format
Photograph, Black & White
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Language
English
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Inscriptions
Museum Victoria catalogue reference handwritten in black pencil on reverse at lower right: "MM 68416". On reverse handwritten in black ink: "LEO I : [illegible] arrangement".
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Classification
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Category
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Discipline
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Type of item
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Image Dimensions - Photograph
207 mm (Length), 167 mm (Width)
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Keywords
Computer Engineering, Computer Programming, Computer Software, Computers, Computing
