Science of Cambridge MK14

The MK14 (1977) was the first computer to carry Clive Sinclair’s name into the home-hobbyist market, sold by his company Science of Cambridge — the outfit that became Sinclair Research a couple of years later. It’s about as bare as a “computer” gets: a single circuit board, a hex keypad, an 8-digit LED display, and a National Semiconductor SC/MP processor with as little as 256 bytes of RAM. No BASIC, no screen output beyond the LEDs — programs were entered as raw machine code, digit by digit. It sold in respectable numbers for a kit of its kind and gave Sinclair the manufacturing and mail-order experience that fed directly into the ZX80 three years later.

Reference photo: Wikimedia Commons (“Sinclair - Science of Cambridge MK14.jpg” by Steve Elliott), CC BY-SA 2.0.