Processor register

Please note that the content of this book primarily consists of articles available from Wikipedia or other free sources online. In computer architecture, a processor register (or general purpose register) is a small amount of storage available on the CPU whose contents can be accessed more quickly than storage available elsewhere. Typically, this specialized storage is not considered part of the normal memory range for the machine. Most, but not all, modern computers adopt the so-called load-store architecture. Under this paradigm data is 'shuffled' from subordinated memory- be it L# cache or RAM- into registers, 'crunched' therein by running instructions from the instruction set, then transferred out. A common property of computer programs is locality of reference: the same values are often accessed repeatedly; and holding these frequently used values in registers improves program execution performance.