Question

what is the funtion of ALU in a CPU????

Answer 1

The ALU performs Arithmetic and Logic functions. This includes:

Add

Add with carry

Subtract

Subtract with borrow

Compare

And

Or

Xor

etc.

The ALU is the part of the CPU performing the actual calculations. Other parts of the CPU instruct the ALU on which functions to perform, and yet other parts of the CPU are responsible for supplying the arguments to the ALU (e.g. from memory or internal registers) and storing the result (e.g. in memory or internal registers).

Answer 2

The characteristics of the ALU are as follows:

- The ALU is responsible for performing all logical and arithmetic operations.

- Some of the arithmetic operations are as follows: addition, subtraction, multiplication and division.

- Some of the logical operations are as follows: comparison between numbers, letter and or special characters.

- The ALU is also responsible for the following conditions: Equal-to conditions, Less-than condition and greater than condition
An arithmetic logic unit (ALU) is a digital circuit used to perform arithmetic and logic operations. It represents the fundamental building block of the central processing unit(CPU) of a computer. Modern CPUs contain very powerful and complex ALUs.