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Psion (company)

Psion (company) is a computer science topic covered in the lgStudy science library. This page brings together a partial reference excerpt, illustrations, worked examples, real-world applications and a short study plan, so you can understand Psion (company) rather than just read about it. In short: Psion PLC was a designer and manufacturer of mobile handheld computers for commercial and industrial uses. The company was headquartered in London, England, with major operations in Mississauga, Ontario, Canada, and other company offices in Europe, the United States, Asia, Latin America, and the Middle East.

Psion (company) — main illustration
Psion (company) — illustration

Key takeaways

  • Psion (company) belongs to computer science; place it in that map before memorising details.
  • Learn the definition first, then one example that makes the definition concrete.
  • Connect Psion (company) to a quantity you can measure, compute or draw — that is where exam questions come from.
  • Reproduce the core statement of Psion (company) from memory before moving on to harder problems.

Reference excerpt

Psion PLC was a designer and manufacturer of mobile handheld computers for commercial and industrial uses. The company was headquartered in London, England, with major operations in Mississauga, Ontario, Canada, and other company offices in Europe, the United States, Asia, Latin America, and the Middle East. It was a public company listed on the London Stock Exchange (LSE: PON) and was once a constituent of the FTSE 100 Index. Psion's operational business was formed in September 2000 from a merger of Psion and Canadian-based Teklogix Inc., and was a global provider of solutions for mobile computing and wireless data collection. The Group's products and services included rugged mobile hardware, secure software and wireless networks, professional services, and support programs. Psion worked with its clients in the area of burgeoning technologies, including imaging, voice recognition, and radio-frequency identification (RFID). They had operations worldwide in 14 countries, and customers in more than 80 countries. Formed in 1980, Psion first achieved success as a consumer hardware company that developed the Psion Organiser and a wide range of more sophisticated clamshell personal digital assistants (PDAs). Psion either closed or disposed of all its prior operations and then focused on rugged mobile computing systems. It withdrew from the consumer device market in 2001. Motorola Solutions announced in June 2012 that it had agreed to acquire Psion for $200 million.

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 Chequered Flag and Flight Simulation. 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 unique. 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 when the QL was launched in 1984 it was bundled with Quill, Archive, Abacus and Easel; respectively a word processor, database, spreadsheet, and business graphics application. These were later ported to DOS and made available for the IBM PC and ACT's Sirius and Apricot computers, collectively called PC-Four, or Xchange in an enhanced version. Xchange was also available for ICL's One Per Desk computer, which was based on the QL.

Psion Organiser (1984)

In 1984, Psion first entered the hardware market with the Psion Organiser, an early handheld computer, in appearance resembling a pocket calculator with an alphanumeric computer keyboard. In 1986, the vastly improved Psion Organiser II was released, and was assembled by Speedboard Assembly Services. Its success led the company into a decade long period of Psion Computer and operating system development. It included the simple-to-use Open Programming Language (OPL) for database programming, which sparked a large independent software market.

EPOC (1987)

In 1987, Psion began developing its SIxteen Bit Organiser (SIBO) family of devices and its own new multitasking operating system named EPOC, to run its third generation product, Laptops (MC), industrial handhelds (HC and Workabout) and PDA (Series 3) products. It is often rumoured that EPOC stands for "Electronic Piece Of Cheese" however Colly Myers, who was Symbian's CEO from founding until 2002, said in an interview that it stood for 'epoch' and nothing more. This development effort produced the clamshell QWERTY-based Psion Series 3 palmtops (1993–98), which sold in the hundreds of thousands, and the Psion MC-series laptops, which sold poorly compared to the DOS-based laptops of the era.

A second effort, dubbed Project Protea, produced the Psion Series 5 for sale in 1997, a completely new product from the 32-bit hardware upwards through the OS, UI, and applications. It is still remembered for its high quality keyboard which, despite its size, allowed for touch-typing. However, the new feel of the product, and the removal of certain familiar quirks, alienated loyal Series 3 users, who tended to stick with their PDAs rather than upgrade. In 1999, Psion released the Psion Series 7, which was much like a larger version of the Series 5, but with a double-size VGA-resolution screen that featured 256 colours (the Series 5 had a half-VGA screen with 16 grey shades). It was followed by the very similar Psion netBook. Psion was being challenged by the arrival of cheaper PDAs such as the Palm Pilot, and PocketPCs running Microsoft's Windows CE, and in 2003, Psion released a Netbook Pro running Windows CE .NET 4.2 instead of EPOC.

… excerpt ends here. Continue reading the full article.

Illustrations

Psion (company) illustration
Psion (company): Psion Organiser II
Psion Organiser II
Psion (company): Psion Series 3
Psion Series 3
Psion (company): Psion 5mx Pro
Psion 5mx Pro
Psion (company): Psion Workabout
Psion Workabout

Worked examples

Example 1 — a first encounter with Psion (company)

Start with the simplest possible case. Write down what Psion (company) claims or describes in one sentence, then invent the smallest concrete situation in which that sentence is true. In computer science, the smallest case is usually a single object, a single equation or a single measurement. Check that every symbol or term in your sentence has a meaning in that case.

Example 2 — changing one variable

Take the situation from Example 1 and change exactly one quantity: double it, halve it, or set it to zero. Predict what should happen to Psion (company) before you calculate. Comparing your prediction with the result is the fastest way to find out whether you understand the idea or only the words.

Example 3 — an exam-style question

Typical questions about Psion (company) ask you to (a) state it precisely, (b) apply it to given data, and (c) explain a limitation. Practise writing all three answers in under five minutes; the third part is what separates a full-mark answer from an average one.

Applications of Psion (company)

In research
Psion (company) appears in computer science research whenever the underlying quantities have to be modelled precisely. Papers usually cite it as a starting assumption and then explore where it breaks down.
In technology and industry
Engineering practice reuses Psion (company) in design rules, simulations and safety margins. Knowing the idea lets you read a specification sheet and understand why the numbers look the way they do.
In the classroom
Psion (company) is common in secondary-school and first-year university syllabi. It links to neighbouring topics Companies established in 1980, Companies formerly listed on the London Stock Exchange, Defunct companies based in London, so understanding it makes those chapters shorter.
In everyday life
Look for Psion (company) outside the textbook — in sport, cooking, traffic, electronics or the sky above you. An example you found yourself is remembered far longer than one you were given.
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How to study Psion (company) in 20 minutes

  1. Read the reference excerpt below once, without taking notes.
  2. Close the page and write down what Psion (company) means in your own words.
  3. Compare your version with the excerpt and mark what you missed.
  4. Work through the three examples above with pen and paper.
  5. Explain Psion (company) out loud to somebody else — or to Teacher Smith in the lgStudy chat.

Frequently asked questions

What is Psion (company) in simple terms?

Psion PLC was a designer and manufacturer of mobile handheld computers for commercial and industrial uses. The company was headquartered in London, England, with major operations in Mississauga, Ontario, Canada, and other company offices in Europe, the United States, Asia, Latin America, and the Mi…

Why does Psion (company) matter?

Because it connects several computer science ideas at once: it gives you a definition you can apply, a quantity you can calculate, and a way to check whether a result is plausible.

How should I study Psion (company)?

Read the excerpt, restate it from memory, then work through the examples and applications listed on this page. The five-step study plan above takes about twenty minutes.

What does this page cover?

It gives you a compact reference excerpt plus original lgStudy explanations, examples, applications and study material on Psion (company).

Tags

  • Companies established in 1980
  • Companies formerly listed on the London Stock Exchange
  • Defunct companies based in London
  • Defunct computer companies of the United Kingdom
  • Defunct computer hardware companies
  • Personal digital assistants
  • Radio-frequency identification
  • Radio-frequency identification companies
  • Software companies of Canada

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