This object is part of a collection relating to the history and development of calculating devices assembled by Assoc Professor Allan Bromley of Sydney University, comprising mathematical instruments, slide-rules, mechanical and electronic calculators, electronic analogue computers, computer components, kit computers, education computers, and associated ephemera.

Allan Bromley was a lecturer and researcher at the University of Sydney Basser Department of Computer Science from 1978 until his untimely death in August 2002. He specialised in Computer Architecture, Computer Logic and in particular the History of Computing. He was regarded as the world authority on Charles Babbage's Calculating Engines (instigating the building of the Difference Engine No.2 at the Science Museum London) and the Antikythera Mechanism and had extensive knowledge of calculators, analogue computers, logic, stereopsis, totalisators, clocks and time keeping and mechanical engineering.

Manufactured: Sweden, 1955-1967

Educational benchtop computer, Feedback, metal / plastic / glass, made in Sweden, marketed by Ronald J T Payne, Australia, 1955-1967

This 'Feedback' educational computer has 2 units: an arithmetic unit (EC 362) and a control unit (EC 372).

It has lights and dials; indicating lights registers; switches, graph line showing data place.
Core store of 512 words. Address registers. At bottom fault selectors.

Made: 1955 - 1967

EC 362; EC 372

2010/1/248

1955 - 1967

135 mm

186 mm