Processor registers are normally at the top of the memory hierarchy, and provide the fastest way to access data. Modern processors use either static or dynamic RAM as main memory, with the latter usually accessed via one or more cache levels. Manipulated data is then often stored back to main memory, either by the same instruction or by a subsequent one. DEC PDP-10, ICT 1900.Īlmost all computers, whether load/store architecture or not, load data from a larger memory into registers where it is used for arithmetic operations and is manipulated or tested by machine instructions. In computer architecture, registers are typically addressed by mechanisms other than main memory, but may in some cases be assigned a memory address e.g. Registers usually consist of a small amount of fast storage, although some registers have specific hardware functions, and may be read-only or write-only. ( Learn how and when to remove this template message)Ī processor register is a quickly accessible location available to a computer's processor. Please help update this article to reflect recent events or newly available information.
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