·
What is
ALU? Write the function of ALU and control unit.
Ø
ALU stands for Arithmetic logic Unit. It is the
main component of CPU. ALU performs all type of mathematical and logical
operation such as:
Ø
Arithmetic Operation – Addition, subtraction,
multiplication, division, increment, decrement
Ø
Logical Operation – Logical OR, Logical AND,
Logical NOT etc.
Ø
Others – Left shift, R6ktr`ight shift, clear.
·
Function
of ALU
1)
It accepts operands from registers.
2)
It performs arithmetic and logical operation.
3)
It returns result to memory.
4)
It reads states of and ALU.
·
Function
of control Unit.
1)
It generate control signal and sends all the
parts of computer.
2)
It controls all types of primary and secondary
memory.
3)
It controls the entire peripheral device such as
input device, output device and many more.
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