COMPLEX INSTRUCTION SET COMPUTER Meaning and
Definition
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A complex instruction set computer (CISC) is a type of computer architecture that is designed to execute a wide variety of complex instructions. It refers to a CPU design in which the microprocessor supports a large set of intricate instructions that can be executed by the machine. These instructions are generally multi-step operations that perform multiple tasks within a single instruction.
CISC architecture was developed as a contrast to reduced instruction set computers (RISC), which emphasize a smaller and more streamlined set of instructions that can be executed more quickly. In contrast, CISC chips have a larger instruction set that includes instructions for complex computations and operations not present in RISC.
The CISC architecture is known for its ability to perform sophisticated operations in a single instruction, reducing the need for multiple instructions and lowering the program size. Examples of complex instructions commonly found in CISC processors include multiply and divide operations, string manipulation, loading and storing multiple values at once, and performing arithmetic and logical operations on memory locations.
CISC architecture was initially popular in the early personal computer era when memory was limited, as it enabled programmers to write more compact code. However, as memory became cheaper and the demand for increased speed grew, RISC architecture gained more prominence due to its simplicity and reduced instruction cycle time.
Overall, a complex instruction set computer is a type of computer architecture that supports a rich variety of complex instructions, allowing for efficient execution of intricate operations within a single instruction.
Common Misspellings for COMPLEX INSTRUCTION SET COMPUTER
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