<P> The British computer manufacturer Acorn Computers first developed the Acorn RISC Machine architecture ( ARM ) in the 1980s to use in its personal computers . Its first ARM - based products were coprocessor modules for the BBC Micro series of computers . After the successful BBC Micro computer , Acorn Computers considered how to move on from the relatively simple MOS Technology 6502 processor to address business markets like the one that was soon dominated by the IBM PC , launched in 1981 . The Acorn Business Computer ( ABC ) plan required that a number of second processors be made to work with the BBC Micro platform , but processors such as the Motorola 68000 and National Semiconductor 32016 were considered unsuitable , and the 6502 was not powerful enough for a graphics - based user interface . </P>
<P> The British computer manufacturer Acorn Computers first developed the Acorn RISC Machine architecture ( ARM ) in the 1980s to use in its personal computers . Its first ARM - based products were coprocessor modules for the BBC Micro series of computers . After the successful BBC Micro computer , Acorn Computers considered how to move on from the relatively simple MOS Technology 6502 processor to address business markets like the one that was soon dominated by the IBM PC , launched in 1981 . The Acorn Business Computer ( ABC ) plan required that a number of second processors be made to work with the BBC Micro platform , but processors such as the Motorola 68000 and National Semiconductor 32016 were considered unsuitable , and the 6502 was not powerful enough for a graphics - based user interface . </P>
which is the first company who defined risc architecture
which is the first company who defined risc architecture
Acorn Computers
Acorn Computers