datels

Datel (previously Datel Electronics) is a UK-based electronics and game console peripherals manufacturer. The company is best known for producing a wide range of hardware and peripherals for home computers in the 1980s, for example replacement keyboards for the ZX Spectrum, the PlusD disk interface (originally designed and sold by Miles Gordon Technology) and the Action Replay series of video game cheating devices.
Datel was founded by Mike Connors, who still runs the company and was featured in the Sunday Times Rich List as one of the UK's top thousand richest people.

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