Photograph of a computer diagram showing a logic diagram for part of a computer's arithmetic unit using a bi-quinary design.

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

Circuit diagram for an early era computer [circa 1947].

Physical Description

Black and white photographic print of a computing circuit diagram for an early era computer [circa 1947].

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