After the first couple of biscuit-tin amplifiers and some bare board products like the Mk14, design became a Sinclair USP. He was a kind of proto-Jobs. While m

After the first couple of biscuit-tin amplifiers and some bare board products like the Mk14, design became a Sinclair USP. He was a kind of proto-Jobs. While most of the competition made boring-looking devices, Sinclair hired some of the top people for the time and made products that stood out because they looked exciting. The ZX series are the best known, but there were precursors like the Black Watch and the Sovereign Calculator. https://en.wikipedia.org/wiki/Black_Watch_(wristwatch) https://en.wikipedia.org/wiki/Black_Watch_(wristwatch) http://www.vintagebritishcalculators.info/html/sovereign.html http://www.vintagebritishcalculators.info/html/sovereign.htm... He wasn't so good at making things that worked reliably or delivering them on time, but even with the delays the ZX comps were game changers.