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Reduced Instruction Set Computing (RISC) is a CPU design concept that seeks gains in power as a trade-off for simplified instructions. This design philosophy is directly opposed to Complex Instruction Set Computing (CISC), which is the basis of the x86 style processors of the vast majority of home PCs and laptops.
Performance-OrientedThe construction of the RISC processor is such that performance is the priority, rather than raw power. When RISC and CISC were developed, the bottleneck of microprocessors was power, meaning that CISC won out and efficient, performance-oriented chips were used less and less. RISC came back into vogue when the need increased for chips that make efficient use of portable battery power.
Less VersatileSince the instruction set is so simple, that is, one instruction per cycle, RISC processors tend to be better used for simple and repetitive logic operations. CISC processors are truly "general purpose," meaning that they can pipeline multiple instructions at once without a preference for simpler or more complex applications. RISC processors need to be programmed in a very particular fashion.
SimplerThe performance orientation of the RISC architecture is due to its simple and efficient instruction set. This simplicity means that RISC processors are easier to design and inexpensive to produce, making them ideal for purpose-built and cheap computing machines that execute repetitive instructions.
Long Instruction StringsRISC processors can be adapted to run CISC style instruction strings, but they are incredibly inefficient at doing so. Since a RISC processor can only handle one instruction string at a time, code needs to be more compartmentalised and, therefore, more complicated.
What else can I help you with?
Is 8085 cisc or risc?
RISC is faster than CISC
Is pic microcontroller a cisc or risc?
risc
Dsp architecture cisc or risc?
risc
Is Pentium 4 a cisc or risc?
RISC
Pentium 4 use risc or cisc?
CISC
Are Pentium 1 Risc Processors or Cisc?
Pentium I processors are CISC.
Which two categories are used to classify CPU architecture?
CISC and RISC are the two categories that are used to classify CPU architecture. CISC is an acronym for complex instruction set computer.
8086 is risc or cisc based architecture?
The 8086/8088 is a CISC based architecture.
Please can someone give me the answera) Identify any FOUR 4 drawbacks of a CISC processor compared to a RISC processor?
In CISC, the instruction set is very large that can be used for complex operations while in RISC the instruction set is reduced, and most of these instructions are very primitive. CISC computer's execution time is very high whereas RISC computer's execution time is very less. In, CISC code expansion is not a problem while in RISC code expansion may create a problem. In CISC, decoding of instructions is complex whereas, in RISC, the decoding of instructions is simple. CISC requires external memory for calculations, but RISC requires external memory for calculations. CISC has only a single register set while RISC has multiple register sets are present.
Is 8051 a cisc or risc?
8051 is a CISC but having less number of instruction as comared to ARM which is RISC.CISC
What do RISC and CISC stand for?
CISC: Complex Instruction Set ComputerRISC: Reduced Instruction Set Computer
Which has less number of instruction risc or cisc?
RISC stands for Reduced Instruction Set Computer. The design strategy of a RISC processor includes limiting the number of instructions. This does not mean that ALL RISC processors have less instructions than ALL CISC processors, but in general, they do.
