A processor is the logic circuitry that responds to and 
processes the basic instructions that drive a computer. 
The term processor has generally replaced the term central 
processing unit (CPU). The processor in a personal computer 
or embedded in small devices is often called a 
microprocessor. 

A processor is combinational logical Integreted Chip(IC) 
that is designed to perform all operations.When connected 
with in a proper circuitary board.A processor is also know 
as a CPU.It is also called as a microprocessor.

Processor is main system unit of computer., which is process
data electronically.