Explain function unit of a computer system?
Answers
Answer:
Functional units are a part of a CPU that performs the operations and calculations called for by the computer program. A computer consists of five main components namely, Input unit, Central Processing Unit, Memory unit Arithmetic & logical unit, Control unit and an Output unit.
Answer:
Functional Unit of Computer.
Explanation:
Functional Unit of Computer are:-
1) Arithmetic Logical Unit (ALU):
Data enters through the input device it is stored in the primary storage unit. The actual processing of the data and instruction are performed by ALU. The major operations performed by the ALU are addition, subtraction, multiplication, division, logic, and comparison. Data is transferred to ALU from the storage unit when required. After processing the output is returned to the storage unit for further processing or getting stored.
2) Control Unit(CU):
The next component of a computer is the Control Unit, which acts like the supervisor seeing that things are done properly. Control Unit is responsible for coordinating various operations using the time signal. The control unit determines the sequence in which computer programs and instructions are executed. Things like processing of programs stored in the main memory, interpretation of the instructions and issuing of signals for other units of the computer to execute them. It also acts as a switchboard operator when several users access the computer simultaneously. Thereby it coordinates the activities of the computer’s peripheral equipment as they perform the input and output.
3) Central processing unit (CPU):
The ALU and the CU of a computer system are jointly known as the central processing unit. CPU is the brain of any computer system. It is just like a brain that takes all major decisions, makes all sorts of calculations and directs different parts of the computer functions by activating and controlling the operations.