ARM is a processor design which began life at Acorn Computers Limited, but was spun off into a company called ARM Limited when the value of the design outside Acorn workstations was recognized. It's a purely 32-bit line using a very succinct RISC instruction set, though it was retrofitted with 16-bit instructions (so-called "Thumb" instructions) to improve code density. VLSI were the first fabs. Outside Acorn, Apple were early supporters of ARM, and used the processor in their Newton. These days, even Intel makes ARMs, having acquired the StrongARM design via DEC: they rebranded it XScale.

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Last updated: Tuesday 19th September 2006