What's is processor in general ?

A processor, also known as a central processing unit (CPU), is an electronic circuitry that executes instructions and performs calculations in a computer system. It is often referred to as the "brain" of the computer as it carries out the majority of the computing tasks. The processor interprets and executes instructions from the computer's memory, performs arithmetic and logical operations, manages data flow, and controls the overall operation of the computer system. It is responsible for executing software programs and coordinating the activities of other hardware components in the computer. Processors come in various types and models, with different specifications and capabilities, and they play a crucial role in determining the performance and speed of a computer system.