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Manual - Basic Programming, Sinclair ZX81 Computer, United Kingdom,1981 Document Reg. No: HT 21847

Manual dealing with all aspects of the ZX81 home computer - installation, programming and running programs. It is addressed to the novice but also caters for the initiated. The Sinclair ZX81 home computer, released by the UK firm Sinclair Research in 1981, was part of the push to develop a mass market for cheap computers. This push led to a boom in companies producing hardware and softaware, which still continues in 2008. It had a very small component count. Tony Tebby of Sinclair Research noted that 'It was a real computer, you could do calculations, it was programmable, you could do lots of things with it - it was in every way a real computer at a very low price.'

In March 1981 magazine Infomatics stated that 'The secret ... of the lower price and improved performance of the ZX81 over the ZX80 is a new bipolar chip designed by Sinclair . . . The single integrated circuit concentrates 18 of the 21 chips of the ZX80, so that the ZX81 comes with only four chips . . . The new chip . . . eliminates the need for the processor to drive the TV display, thus causing the screen to go blank whenever processing was being done. The ZX81 processes in two modes: normal, where the display is constantly on, and fast, where processing takes place at four times the speed but data is only displayed either at the completion of a program, when input data is awaited, or during a pause.'
Ring bound booklet with bluish front cover.
Acquisition Information:
Donation from Helen Olsen, 2008
Discipline: Technology
Dimensions: 205 mm (Height), 165 mm (Width)

More information

Tagged with: computing, computers
Themes this item is part of: Information & Communication Collection
Primary Classification: COMPUTING & CALCULATING
Secondary Classification: Digital Computing
Tertiary Classification: reference materials
Inscriptions: Printed, front cover, red ink: "Sinclair / ZX81 Basic Programming'. Extensive text within.
Model Name/Number: ZX81
Manufacturer: Sinclair Research Ltd, Cambridge, Cambridgeshire, England, Great Britain, 1981
Past Owner: Alfred Milgrom, Melbourne, Victoria, Australia, 1980
References: accessed 15 July 2008
A. Tony Tebby of Sinclair Research, Interview, 24 October 1985.
Infomatics, 16 March 1981.

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