CPU Full Form is Central Processing Unit. It is pronounced as individual letters. CPU is hardware of a computer, which is also referred to as, ‘processor’ or ‘central processor’. It is the brain of computers in which majority of the computations or calculations take place. It is the CPU, which is responsible for the execution and interpretation of most commands from the software and hardware.
The CPU comprises of two main components: (1). ALU or Arithmetic Logic Unit – this performs all logical and arithmetic operations (2). CU or Control Unit – this extracts various instructions from the memory of the computer, decodes, and executes the same. It calls on the ALU as and when required. Conventional systems had CPU as a separate unit away from the monitor, while the modern computers have them as an integral part of the sleek monitor.