IMSAI 8080 computer kit (assembled)
Object No. 96/403/1
The IMSAI 8080 computer was released in late 1975 just a few months after the release of the Altair 8800, regarded as the worlds first microcomputer, making the IMSAI the second. It was essentially an improved version of the Altair and can conceivably lay claim to being the first microcomputer clone. This type of small kit form machine was realised, created and marketed at this time because of the microprocessor - the electronic circuitry required for the arithmetic and logic functions had become available in a single chip. The IMSAI is based on the S100 BUS (a frame into which various cards of electronics can be installed) which became the early standard for microcomputers. It was initially only available in kit form and was consequently marketed toward the electronics enthusiast. The IMSAI was programmed via a set of switches on the front panel. Peripheral devices could be added as cards were designed to interface to the IMSAI 8080. In many cases, it may be assumed, the IMSAI computers were initially used by their purchasers and assemblers to become more familiar with computers and computing. The IMSAI continued to be manufactured throughout the seventies and used by computer programmers for serious scientific and commercial applications. In its kit form the IMSAI cost less than US$1000 in 1976 and was considered to be a high quality instrument for the price. Campbell Bickerstaff
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Summary
Object Statement
Personal computer, with cable, IMSAI 8080 computer kit (assembled), plastic / metal / electrical components, designed by IMS Associates Inc, San Leandro, California United States of America, 1975, used by John Haymes, Sydney , New South Wales, Australia, 1975-1981
Physical Description
IMSAI 8080 computer as assembled from a kit housed in a flat rectangular unit with clear perspex casing. There is a grill along the proper left side panel. The front panel has an array of blue and red plastic switches and various indicators labelled 'DATA', 'ADDRESS', 'STATUS' etc. The back panel has a cooling fan, a red switch, fuse and various inlet and outlet sockets. There is a grey plastic power cord which extends from the back with a white plug.
DIMENSIONS
Height
180 mm
Width
444 mm
Depth
498 mm
Weight
16 kg
PRODUCTION
Notes
This microcomputer was designed by IMS Associates Inc in San Leandro, California, USA. Utilising the S100 bus standard the IMSAI 8080 was a copy of the design of the Altair 8800 the worlds first micro computer. It is based on the Intel 8080 micro processor chip. The IMSAI was sold as a kit and was therefore constructed by its owner. The IMSAI was produced from 1975 to 1978.
HISTORY
Notes
The IMSAIs were commonly used by their owners to learn about computing. As more processing and memory capacity was added to the IMSAI computer range they became capable of more complex computer applications, particluarly in laboratories and small commercial software developers. John Haymes applied his IMSAI in the development of programs and in streamlining the organisation of his work practices. In 1978 the IMSAI kits were retailing for US$649.95.
SOURCE
Credit Line
Gift of John W Haymes 1996
Acquisition Date
23 December 1996
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