What is Microprocessor ?

Microprocessor :

1. The Microprocessor or Processor or CPU are one thing.
2. CPU is the brain of computer.
3. The program which is to be executed , is stored in the main memory.
4. The CPU also read data from the memory , which are required for instruction execution.

CPU organization :  
@ ALU  - It stand for Arithmetic logic Unit
@ The function of arithmetic and logic unit is to perform arithmetic and logic operations.
@ ALU performs the following operations :-

i. Addition / substraction / multiplication / Division
ii. Logical AND
iii. Logical OR
iv. Logical exclusive OR
v. Complement (Logical NOT)
vi. Increment / Decrement
vii. Right and Left shift
viii. clear

etc.

2. CU ( Control Unit ) :-

@ The CU controls the entire operation of the computer.
@ It also controls all other devices such as Memory, Input / Output devices connected to the CPU.
@ It controls the data flow between CPU.

3. Registers :-

@ A CPU containds a number of registers to store data temporarily during the execution of a program.




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