RISC OS is released

RISC OS is released

RISC OS is a computer operating system which was originally developed by Acorn Computers Ltd in Cambridge, England for their ARM based computers. It was first released in 1988 as RISC OS 2.00, having been derived from Acorn's Arthur operating system, with the addition of cooperative multitasking. The operating system takes its name from the RISC (reduced instruction set computing) architecture used on supported systems.

Since the Archimedes range, RISC OS has been bundled with nearly every Acorn computer model, including the RiscPC and A7000 computers. After the breakup of Acorn in 1998, development of RISC OS was continued by several companies, including RISCOS Ltd and Castle Technology Ltd. Also since 1998, RISC OS has been bundled with a number of ARM based 'Acorn Clone' personal computers such as the Iyonix and A9home.





RISC OS is released

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