Question

which unit is known as the heart of cpu​

Answer 1

Answer:

CLOCK SIGNAL

Explanation:

Assuming you mean that the CPU (central processing unit) is the brain of the computer system, the heart of the computer system would be the clock signal on the motherboard, which provides a regular beat that allows the CPU to proceed with its work

Answer 2

Answer:

microprocessor

Explanation:

it perform all tasks, calculation and data processing and it is also known as the brain of computer