ARM CPU
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ARM architecture - Wikipedia, the free encyclopedia
ARM is a 32-bit reduced instruction set computer (RISC) instruction set architecture (ISA) developed by ARM Holdings . It was named the Advanced RISC Machine and, before that, the Acorn RISC Machine . The ARM architecture is the most widely used 32-bit instruction set architecture in numbers produced. [ 2 ] [ 3 ] Originally conceived by Acorn Computers for use in its personal computers , the first ARM-based products were the Acorn Archimedes range introduced in 1987. [ edit ] Features and applications In 2005, about 98% of the more than one billion mobile phones sold each year used at least one ARM processor. [ 4 ] As of 2009 [update] , ARM processors account for approximately 90% of all embedded 32-bit RISC processors [ 5 ] and are used extensively in consumer electronics, including personal digital assistants (PDAs), tablets, mobile phones, digital media and music players, hand-held game consoles, calculators and computer peripherals such as hard drives and routers . [ edit ] Licensees
by Andreas Schwarz ARM is a company that develops processor cores. ARM does not produce any silicon itself, but licenses the IP (intellectual property) to semiconductor manufacturers who integrate the core with peripherals and RAM. The ARM7(TDMI) was the first ARM architecture that gained widespread use in small to medium-size microcontrollers. The extension TDMI indicates support for an additional, 16 bit instruction set, called Thumb .
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