Central Processing Unit (CPU)
- Central Processing Unit:-
CPU is the abbreviation for Central Processing Unit. The CPU is the brain of computer. Sometimes referred to simply as the central processor, but more commonly called processor,the CPU is where most calculations take place.
In terms of computing power, the CPU is the most important element of a computer system. The CPU itself is an internal component of the computer. Modern CPUs are small and square contain multiple metallic connectors or pins on the underside. The CPU is inserted directly into a CPU socket, pin side down, on the motherboard.
- ALU (Arithmetic Logic Unit)
- CU (Control Unit)
ALU is the Abbreviation of arithmetic logic unit, the part of a computer that perform all arithmetic computations, such as addition and multiplication, and all the comparison operations. The ALU is the one component of the CPU (central processing unit). The ALU is a fundamental building block of the central processing unit (CPU) of a computer, and even the simplest microprocessors contain one for purposes such as maintaining timers.
CU is the abbreviation of control unit, the part of computer which overall control all the mechanism of processor. It decodes the instruction coming from the device and send to the ALU for necessary action. It also keep track on all the activates of the computer parts.
- Types of CPU:-
- Complex instruction set computer (CISC):-
A complex instruction set computer (CISC) is a computer where single instruction can execute several low level operations (such as a load from memory, an arithmetic operation, and a memory store) and/or are capable for multi-step operations or addressing modes within single instructions.
- Reduced instruction set computing (RISC):-
RISC is a CPU design strategy based on the insight that simplified (as opposed to complex) instructions can provide higher performance if this simplicity enables much faster execution of each instruction.
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