Psion PLC is a consumer hardware company mostly known for developing the Psion Organiser as well as a whole range of more advanced, clamshell-design Personal Digital Assistants. Psion today comprises one remaining operating division, the Canadian Psion Teklogix, having closed or disposed of all its previous operations. Although its actual operations are based in Canada, Psion itself is a British company. History Psion was established in 1980 as a software house with a close relationship with Sinclair Research. The company developed games and other software for the ZX81 and ZX Spectrum home computers, released under the Sinclair brand. Its name is said to mean "Potter Scientific Instruments Or Nothing", a reference to its founder David Potter, CBE (and managing director until 1999). Psion's games for the ZX Spectrum included "Psion Chess", and Horace Goes Skiing. In early 1983, Sinclair approached Psion regarding the development of a su

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