Consider the following statements: Arithmetic Logic Unit (ALU) 1. Performs arithmetic operations 2. Performs comparisons. 3. Communicates with I/O devices 4. Keeps watch on the system Which of these statements are correct?

Consider the following statements: Arithmetic Logic Unit (ALU) 1. Performs arithmetic operations 2. Performs comparisons. 3. Communicates with I/O devices 4. Keeps watch on the system Which of these statements are correct? Correct Answer 1 and 2 only

Concept

An Arithmetic Logic Unit is a digital circuit used to perform

• arithmetic operations (Add, Subtract, Multiplication, division)
• logical operations (compare, complement)

ALU is designated as the fundamental building block of CPU. But it cannot communicate with I/O devices. It also cannot clock or monitor the system.

Explanation:

Statement 1. True

ALU performs arithmetic operations

Statement 2. True

ALU performs comparisons.

Statement 3. False

ALU doesn’t communicates with I/O devices

Statement 4. False