The Acorn Electron is a budget version of the BBC Micro educational / home computer made by Acorn Computers Ltd.

( C ) 1983 Acorn Computers Ltd. Thanks are due to the following contributors to the development of the Electron ( among others too numerous to mention ):- Bob Austin, Astec, Harry Barman, Paul Bond, Allen Boothroyd, Ben Bridgewater, Cambridge, John Cox, Chris Curry, 6502 designers, Jeremy Dion, Tim Dobson, Joe Dunn, Ferranti, Steve Furber, David Gale, Andrew Gordon, Martyn Gilbert, Lawrence Hardwick, Hermann Hauser, John Herbert, Hitachi, Andy Hopper, Paul Jephcot, Brian Jones, Chris Jordan, Computer Laboratory, Tony Mann, Peter Miller, Trevor Morris, Steve Parsons, Robin Pain, Glyn Phillips, Brian Robertson, Peter Robinson, David Seal, Kim Spence-Jones, Graham Tebby, Jon Thackray, Topexpress, Chris Turner, Hugo Tyson, John Umney, Alex van Someren, Geoff Vincent, Adrian Warner, Robin Williamson, Roger Wilson.

* Acorn Business Computer, a series of microcomputers announced at the end of 1983 by the British company Acorn Computers

The BBC published BBC BASIC, developed for them by Acorn Computers Ltd, incorporating many extra structuring keywords and advanced floating-point operation features.

* The BBC Micro home computer from 1982, built for the BBC by Acorn Computers Ltd

* BBC Domesday Project, a partnership between Acorn Computers Ltd, Philips, Logica and the BBC with some funding from the European Commission's ESPRIT programme, to mark the 900th anniversary of the original Domesday Book, an 11th century census of England.

The TRS-80 Color Computer, IBM PCjr, MSX, and BBC Micro from Acorn Computers all contained a built-in relay for controlling an external tape recorder.

It was also used in a number of products including the Acorn Computers Risc PC and Eidos Optima video editing system.

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| known_for = Work with Acorn Computers, particularly the BBC Micro and on the ARM processor

Originally conceived by Acorn Computers for use in its personal computers, the first ARM-based products were the co-processor modules for the BBC Micro series of computers.

After achieving success with the BBC Micro computer, Acorn Computers Ltd considered how to move on from the relatively simple MOS Technology 6502 processor to address business markets like the one that would soon be dominated by the IBM PC, launched in 1981.

# REDIRECT Acorn Computers

* 1998 – Castle Technology acquire the rights to continue to market and produce the RiscPC during the breakup of Acorn Computers.

A British computer that used the 6502 was the BBC Micro, manufactured by Acorn, Ltd.

The work was so important that Acorn spun off the design team in 1990 into a new company called Advanced RISC Machines Ltd. Advanced RISC Machines became ARM Ltd when its parent company, ARM Holdings plc, floated on the London Stock Exchange and NASDAQ in 1998.

The Acorn Atom was a home computer made by Acorn Computers Ltd from 1980 to 1982 when it was replaced by the BBC Micro ( originally Proton ) and later the Acorn Electron.

Acorn Computers Ltd implemented a 1200 baud variation of CUTS in their BBC Micro and Acorn Electron microcomputers, which reduced a ' 0 ' bit to one cycle of a 1200 Hz sine wave and a ' 1 ' bit to two cycles of a 2400 Hz wave.

In March 1999 RISCOS Ltd negotiated a license with Element 14, the recently renamed Acorn Computers, and set about finishing the development of RISC OS 4.

ARX was a Mach-like operating system written in Modula-2 + developed by Acorn Computers Ltd in the Acorn Research Centre ( ARC ) UK and later Olivetti Research Center and later on Software Technology Laboratory ( when Olivetti bought out Acorn ) at Palo Alto for their new ARM RISC processors based Archimedes computers range.

* Andy Hopper CBE FRS, co-founder of Acorn Computers Ltd

* Acorn Computers Ltd

* Charge-free Software for RISC iX machines – Acorn legacy FTP Site, hosted by RISCOS Ltd

* Acorn Electron, an 8-bit computer by Acorn Computers Ltd

The hardware of the BBC Micro was emulated by a single customized ULA chip designed by Acorn in conjunction with Ferranti.

Although Acorn were able to shrink substantially the same functionality as the BBC into just one chip, manufacturing problems meant that very few machines were available for the Christmas period — to the extent that some shops reported eight presales for every delivered machine.

Following Olivetti's 1985 cash injection into Acorn the machine was effectively sidelined.

The Acorn Plus 1 added two ROM slots, an analogue interface ( supporting 2 channels ) and a Centronics parallel port.

( via their ARA / ARA2 / ASR products ) allowed ' Sideways ROM ' capability, that allowed the standard Acorn ROM space to be programmatically mapped out for alternative EPROMs, either physically via ZIF Sockets, or ' virtually ' via ROM-images loaded into ( Battery-backed ) RAM in the same ROM memory space.

Per a News article on Page # 9 of the October 1984 issue of Acorn User, the Acorn ' Plus 2 ' interface was due to provide Econet capability.

The Acorn Plus 3 was a hardware module that connected independently of the Plus 1 and provided a double-density 3½ ” disc drive connected through a WD1770 drive controller and an ADFS ROM.

The Advanced Plus 3 was very similar to the Acorn Plus 3 but packaged as an ADFS ROM cartridge for the Plus 1 with a disc drive connector at the head.

The Slogger and Elektuur Turbo Boards were born out of a hack initially devised at Acorn.

If Acorn had thought to include this small modification in the original Electron design it is likely the machine would have had a much greater impact as it would have nearly doubled the amount of motion possible in games and saved modes 0 – 3 ( including the only 16 colour mode ) from being nearly useless due to contended memory timings.

Advanced Plus 5 and Acorn 6502 2nd Processor.

Despite Acorn themselves effectively shelving the Electron in 1985, games continued to be developed and released by professional software houses until 1991.

There were around 1, 400 games released for the Acorn Electron, several thousand extra public domain titles were released on disc through Public Domain libraries.

See also the list of Acorn Electron games for a fairly comprehensive list of games published for the machine and: Category: BBC Micro and Acorn Electron games for a list of games with information on Wikipedia.

Other services are provided at the Accrington Pals Primary Health Care Centre and the Accrington Acorn Primary Health Care Centre.

The latter two behaviours were inherited by the successor to Acorn MOS, RISC OS.

Acorn created a plug-in for the BBC Master range of computers containing a 80186-10 with 512 KB of RAM, the Master 512 system.