Sinclair adverts

Sinclair Project 60 and the Micromatic Transistor Radio

Here is an advert from the company, or at least the Sinclair Radionics part of it, that would go on to launch the ZX80, ZX81 and ZX Spectrum, and in doing so change the UK compute...

MK14 - the only low-cost keyboard-addressable microcomputer!

This is the second-earliest reference in this collection - and the first to mention an actual computer - to the company that would become Sinclair, which did so much to kick-start...

The new Sinclair DM235 digital multimeter. 3.5 digits. Under £50!

Sinclair Radionics, the company that was based in St. Ives, Cambridgeshire, was in some financial difficulties during the mid 70s, and was part-nationalised by the National Enterp...

MK14 - the only low-cost keyboard-addressable microprocessor!

What would become the home-computing part of the Sinclair empire was at this time operating under the moniker of Science of Cambridge, whilst the Sinclair name itself was still at...

Now, the complete MK 14 micro-computer system from Science of Cambridge

Right on the cusp of the launch of the ZX80, Science of Cambridge was still selling its MK14, which had been launched back in the summer of 1978. The price was still broadly com...

Britain's first complete computer kit - Sinclair ZX80

The ZX80, designed by Jim Westwood and launched on January 29th 1980, was Sinclair's first real computer and was the machine that helped really start the UK's home computer indust...

Why the Sinclair ZX80 is Britain's best selling computer

Just before the release of the ZX81 comes this advert for the ZX80, available in kit form for only £80, or £500 in 2025. Somewhat amusingly it claims to be "a really powerful, f...

The $149.95 Personal Computer: Introducing the Sinclair ZX81

Before Sinclair cut a deal with US watch-manufacturer Timex to distributes the ZX81 in the US as the Timex Sinclair 1000 or 1500, it was available in its original "Sinclair ZX81" ...

The Sinclair ZX81 Personal Computer - New High Performance, New Low Price, Same Sinclair Simplicity

Here's another advert for the Sinclair ZX81 - the computer that sold more than 1.5 million units and which almost single-handedly kick-started the computer revolution in the UK. I...

WH Smith: What Would I Do With a Computer?

This advert is a small A5 4-page booklet produced by UK newsagent chain WH Smith and demonstrates nicely how such regular High Street shops were very much part of the early home c...

Sinclair ZX81 Personal Computer - the heart of a system that grows with you

This advert was quite an impressive 4-page spread which featured in several computer magazines and was used to advertise the ZX81, which launched in the UK in March 1981. The ZX8...

New! Sinclair ZX81 Personal Computer

This is another common advert for Sinclair's ZX81 - the home computer which shipped with only 1K RAM, although Sinclair's BASIC was heavily tokenised and so it wasn't quite as bad...

The world's best personal computer for under £500

Sinclair was nothing if not bold with its claims, including this one that the Spectrum - announced just a few months before at a press conference at the Churchill Hotel on Friday,...

Sinclair ZX Spectrum: Colour and sound... High Resolution graphics... from only £125!

This advert shows the Mark 1 Spectrum - as shown by the light grey keys - which retailed for £125 (or around £550 in 2025 terms), and in a bit of a Sinclair theme, promised "comin...

ZX Spectrum - 16K or 48K RAM from only £125!

This advert is part of an impressive four-page spread that appeared early in 1983 for the Sinclair Spectrum, launched at the end of April 1982 but which took eight weeks until fir...