Question :- Describe CPU of computer ?
Answers
Answer:
A central processing unit (CPU), also called a central processor, main processor or just processor, is the electronic circuitry within a computer that executes instructions that make up a computer program.
The CPU (Central Processing Unit) :-The CPU or the Central Processing Unit is the main control central and processing unit. It is also called the brain of the computer as it guides, directs, controls and governs the performance of a computer. The CPU has some sub - components that help in carrying out the processing of a task.
These are :-
▶Arithmetic Logic Unit (ALU) - The ALU performs all the four arithmetic (+, -, *, /) and some logical (<, >, =, ≥, ≤, ! =) operations.
The ALU performs all the four arithmetic (+, -, *, /) and some logical (<, >, =, ≥, ≤, ! =) operations. When the two numbers are required to be added, these numbers are sent from the memory to ALU where addition takes place and the result is put back in the memory.
▶Control Unit (CU) - The CU guides and controls, the interpretations, flow and manipulation of all data and information. The CU send control signals until the required operations and done properly by ALU and Memory. Another important function of CU is the program execution i.e., carrying out all the instructions stored in the program.
▶ Registers - Registers or processor registers are small units of data holding places. The CPU uses registers to temporarily hold some important processing information during the time the processing is taking place.
★ More to Know :
• Computers, as you know, follow the 'IPO' principle i.e., Input => Process => Output (a certain input is processed to generate specific output). So, the computer organization is also like this - these are component(s) dedicated to obtain input in different forms, component(s) dedicated to perform processing part and component(s) to produce output in different forms.