Psion (company) instance of enterprise
History
Beginnings (1980–1984)
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/Psion brand. Psion's games for the ZX Spectrum included Chess, Chequered Flag, Flight Simulation and the Horace series.  Psion Chess was later ported to other platforms, including the early Macintosh in 1984.Early software releases for the ZX Spectrum included titles such as VU-Calc, VU-File and VU-3D along with dozens of other titles.The company name is an acronym standing for "Potter Scientific Instruments", after the company's founder, David Potter. The acronym PSI was already in use elsewhere in the world so "ON" was added to make the name PSION unique. David Potter remained managing director until 1999 and was chairman of the company until late 2009.
In early 1983, Sinclair approached Psion regarding the development of a suite of office applications for the forthcoming Sinclair QL personal computer. Psion were already working on a project in this area and the QL was launched in 1984, bundled with Quill, Archive, Abacus and Easel; respectively a word processor, database, spreadsheet, and business graphics application. These were later ported to DOS and were made available for the IBM PC and ACT Sirius and Apricot computers, collectively called PC-Four, or Xchange in an enhanced version.
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