Summary

Photograph of a diagram entitled "INPUT OUTPUT MECHANISMS". Diagram shows the data paths for the Harvard Mark III device, also known as ADEC (for Aiken Dahlgren Electronic Calculator). The Harvard Mark III was an early device that was partially electronic and partially electromechanical. It was built at Harvard University under the supervision of Howard Aiken for the US Navy.

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 data paths for the Harvard Mark III computer, also known as ADEC (for Aiken Dahlgren Electronic Calculator).

Physical Description

Black and white photograph of a computing block-diagram.

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