This object is part of a collection relating to the history and development of computing and other information technology assembled by Assoc Professor Allan Bromley of Sydney University, comprising of calculators, mechanical and 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 rebuilt of DE2 at the Science Museum London) and the Ankithera Mechanism and had extensive knowledge on calculators, analogue computers, logic, stereopsis, totalisators, clocks and time keeping and mechanical engineering.

Custom assembled/Datel Systems Inc, USA, unknown year of manufacture

When DACs first became integrated they were produced in modules like this one. The circuit was probably a ramp generator since the two TTL ICs are 74193 counter chips.

Digital to analog converter on prototype printed circuit card, metal / plastic / electronic components, custom assembled / Datel Systems Inc, United States of America, 1985

Prototype printed circuit card of DEC style edge connector format with Datel DAC-9-8 module, BNC connector and two TTL ICs mounted on it.

Made: 1985

Datel Systems Inc, D/A converter, 98BI, DAC - 9 - 8 series

2010/1/117

1985

25 mm

75 mm