Summary

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.'

Description of Content

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

Physical Description

Ring bound booklet with bluish front cover.

More Information