Acorn Computers

Acorn Computers was a pioneering British technology company founded in Cambridge during the late 1970s. It rose to prominence with the BBC Micro, a cornerstone of the BBC Computer Literacy Project, and later developed the influential ARM architecture. The company's journey from a microcomputer manufacturer to a pivotal force in semiconductor design left a lasting mark on the global technology industry.

History

The company was established in 1978 by Chris Curry and Hermann Hauser, initially operating from premises on Market Hill, Cambridge. Its first significant product was the Acorn Atom, released in 1980. A major breakthrough came with the contract to supply the BBC for its computer literacy initiative, leading to the launch of the BBC Micro in 1981. This success was followed by the Acorn Electron, a more affordable home computer. In the mid-1980s, facing financial pressures and competition from companies like Commodore International and Sinclair Research, the company was restructured. A pivotal joint venture with Apple Inc. and VLSI Technology in 1990 led to the spin-off of ARM Holdings, which would become its most significant legacy. The original company ceased trading in 2015, with its remaining assets acquired by Broadcom.

Products

The company's product line was defined by the BBC Micro series, including the Model B and the later BBC Master. For the home market, it produced the Acorn Electron. Its ambitious successor to the BBC Micro was the Acorn Archimedes, launched in 1987, which was the first commercial personal computer based on the ARM architecture. The Archimedes line evolved into the Risc PC series in the 1990s. It also developed educational workstations like the Acorn Network Computer and produced various peripherals and an early local area network system called Econet. Software offerings included the RISC OS operating system and programming languages like BBC BASIC.

Technology and architecture

A key technological achievement was the development of the Acorn RISC Machine (ARM) processor. Faced with limitations of contemporary CPUs like the 6502, engineers including Sophie Wilson and Steve Furber designed this revolutionary reduced instruction set computer (RISC) architecture. This work culminated in the ARM2 and ARM3 processors, which powered the Acorn Archimedes and Risc PC. The company also created its own operating system, RISC OS, featuring a graphical user interface and precursor. Other notable innovations included the Advanced Disc Filing System and the use of Programmable Array Logic for system design. Its machines often emphasized high-performance video display controllers and sound capabilities.

Legacy and influence

The most profound legacy is the ARM architecture, which through ARM Holdings became the dominant processor design for embedded systems and, later, smartphones, used by giants like Apple Inc., Samsung, and Qualcomm. The BBC Micro played a crucial role in computer education across the United Kingdom and inspired a generation of programmers. Companies like Raspberry Pi draw direct inspiration from its ethos, and the RISC OS operating system continues to be maintained by a dedicated community. Elements of its technology influenced later developments at Oracle Corporation and Microsoft. Its story is a notable chapter in the history of the Cambridge technology cluster.

Corporate affairs

The company was originally named Acorn Computer Systems, later becoming Acorn Computers Limited. Following its success with the BBC Micro, it was floated on the Unlisted Securities Market. Financial difficulties in 1985 led to a rescue deal with Olivetti, which took a controlling stake. The pivotal establishment of ARM Holdings in 1990 was structured as a joint venture. In the late 1990s, the company renamed itself Element 14 to focus on digital signal processor technology, before that division was sold to Broadcom in 2000. The remaining entity, managing the legacy computer business, was eventually dissolved.

Category:Computer companies of the United Kingdom Category:Companies based in Cambridge Category:Defunct computer companies Category:1978 establishments in England Category:2015 disestablishments in England