RISC meaning in Information Technology ?

Answer:

What is Reduced Instruction Set Computer mean?

A reduced instruction set computer, or RISC (), is a computer with a small, highly optimized set of instructions, rather than the more specialized set often found in other types of architecture, such as in a complex instruction set computer (CISC). The main distinguishing feature of RISC architecture is that the instruction set is optimized with a large number of registers and a highly regular instruction pipeline, allowing a low number of clock cycles per instruction (CPI). Core features of a RISC philosophy are a load/store architecture, in which memory is accessed through specific instructions rather than as a part of most instructions in the set, and requiring only single-cycle instructions.

Although a number of computers from the 1960s and 1970s have been identified as forerunners of RISCs, the modern concept dates to the 1980s. In particular, two projects at Stanford University and the University of California, Berkeley are most associated with the popularization of this concept. Stanford's MIPS would go on to be commercialized as the successful MIPS architecture, while Berkeley's RISC gave its name to the entire concept and was commercialized as the SPARC. Another success from this era was IBM's effort that eventually led to the IBM POWER instruction set architecture, PowerPC, and Power ISA. As these projects matured, a variety of similar designs flourished in the late 1980s and especially the early 1990s, representing a major force in the Unix workstation market as well as for embedded processors in laser printers, routers and similar products.

The many varieties of RISC designs include ARC, Alpha, Am29000, ARM, Atmel AVR, Blackfin, i860, i960, M88000, MIPS, PA-RISC, Power ISA (including PowerPC), RISC-V, SuperH, and SPARC. The use of ARM architecture processors in smartphones and tablet computers such as the iPad and Android devices provided a wide user base for RISC-based systems. RISC processors are also used in supercomputers, such as Fugaku, which, as of June 2020, is the world's fastest supercomputer.

reference

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