processor

A processor, often called a Central Processing Unit (CPU), is the brain of a computer. It's responsible for executing instructions and performing calculations that allow software and hardware to function. in computing and computer science, a processor or processing unit is an electrical component (digital circuit) that performs operations on an external data source, usually memory or some other data stream.It typically takes the form of a microprocessor, which can be implemented on a single or a few tightly integrated metal–oxide–semiconductor integrated circuit chips.