Psion Organiser 1

The Psion Organiser was the brand name of a range of pocket computer developed by the British company Psion in the 1980s. The Organiser I (launched in 1984) and Organiser II (launched in 1986) had a characteristic hard plastic sliding cover protecting a 6x6 keyboard with letters arranged alphabetically.

The Psion Organiser I model, launched in 1984 was the "World's First Practical Pocket Computer". Based on an 8-bit Hitachi 6301-family processor, running at 0.9MHz, with 4kB of ROM and 2kB of static RAM, and had a single-row monochrome LCD screen. The size in mm with the case closed is 142 x 78 x 29.3, and the weight is 225 grams.

The machine provided a simple flat-file database, calculator and clock, and had no operating system. The Organiser I supported removable storage write-once devices which used EPROM storage. The machine could host two of these so-called DATAPAKs (or simply PAKs), to which it could write data but which needed to be removed from the machine and erased by being exposed to ultraviolet light before they could be re-used. As Psion had patented the use of EPROMS as storage device it was impossible for other device manufacturers to copy this innovative approach to mobile storage.

Software supplied on DATAPAK included a crude programming language called POPL, in which end-users could write their own programs. Software DATAPAKs titled Science, Maths and Finance contained the POPL programming language editor, interpreter and runtime and extended the built-in calculator by adding named functions. These DATAPAKs also contained different sets of application programs written in the POPL language.

Our Psion 1 is in working order and it is complete with the hard case and the Utility and 8K datapacks. We are very grateful to Glenn Oliver who kindly donated our Psion.

Manufacturer: Psion
Date: 1984

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Psion Organiser 1 Articles:

Item Manufacturer Date
Psion Comms Link cable for the Organiser II 1989

Magazines RELATED to Psion Organiser 1 in our Library

Item Manufacturer Date
Personal Computer World - August 1987 1 Aug 1987
Practical Computing - December 1987 Dec 1987
Personal Computer World - February 1988 1 Feb 1988
The Micro User - June 1988 - Vol 6 No 4 Database Publications Ltd Jun 1988
Acorn User - August 2001 2001
Acorn User - March 1991 3 Jun 2009

Other Systems Related To Psion Organiser 1:

Item Manufacturer Date
Psion Organiser II XP Psion 1986
Psion Organiser II XP Psion 1986
Psion Organiser II CM Psion 1st January 1986
Psion MC200 Psion 1989
Psion Organiser II LZ64 Psion 1989
Psion Organiser II LZ Psion 1st January 1989
Psion Mobile Computer MC 400 Psion September 1989
Psion Series 3 Psion 1991
Psion Organiser HC120 Psion 1st January 1991
Psion HC100 Starter Kit Psion March 1991
Psion HC110 Starter Kit Psion March 1991
Psion Series 3A Psion 1993
Psion Series 3A Psion 1993
Psion Series 3A Psion 1994
Psion Siena 512K Psion 1996
Psion Series 3C Psion 1996
Psion Series 5 Special Edition (Green) Psion 1997
Psion Series 5 (Boxed) Psion 1997
Psion Series 5 Psion 1997
Psion Series 3mx Psion 1998
Psion Series 7 Psion 1999
Psion netBook Psion 1999
Psion Revo Psion 1999
Psion Series 5mx Psion 1999
Psion Revo Plus Psion September 2000

This exhibit has a reference ID of CH28549. Please quote this reference ID in any communication with the Centre for Computing History.


Psion Organiser 1

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