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Question
What functions are performed by the ALU? Is it an independent unit?
[Computer Science Class – 11 Sumita Arora solutions. Chapter 1 – Computer System Overview.]
Answer
The ALU (Arithmetic Logic Unit) performs all four arithmetic (+, -, *, /) and some logical operations (<, >, =, <=, >=, !=).
When two numbers are to be calculated or compared, they are sent from memory to ALU, operation takes place, and the result is returned to the memory.
Yes, it is an independent unit.