Computer systems and those professionals that preserve, troubleshoot, program, administer, network, and build them are central to most every business. Acorn’s ARM RISC microprocessor is first used in the company’s Archimedes computer system. One of Britain’s main computer companies, Acorn continued the Archimedes line, which grew to almost twenty completely different models, into the Nineteen Nineties. Acorn spun off ARM as its personal company to license microprocessor designs, which in flip has reworked mobile computing with ARM’s low energy, high-efficiency processors and programs-on-chip (SoC).