Psion

PSION was founded in 1980 by David Potter with the PSI part standing for "Potter Scientific Instruments". It started off as a software manufacturer with close ties to Sinclair and entered the PDA and handheld market thereafter.
==198?–1984==
This logo was used in PSION's early days as a software maker for Sinclair's ZX and QL computers.
==1984–2011==
Psion Teklogix.svg|Psion Teklogix logo.
This logo was used on PSION's handheld devices and on later software releases for Sinclair.
==2011–present==
On January 31, 2011, Psion announced that it had dropped "Teklogix" from its corporate name and introduced a new visual identity.
Category:Technology