What is a Processor

processorThe processor is the brain of the computer. It handles all the processes and transactions done by a personal computer. CPU and processor are used interchangeably. CPU or processor is housed in a single chip called microprocessor.
Components of CPU:
  • The arithmetic logic unit (ALU), which performs arithmetic and logical
  • The control unit (CU), which extracts instructions from memory and decodes and execute them, calling on the ALU when necessary.
CPU was housed inside a silicon chip called microprocessor. Microprocessor has three basic characteristics which are:
  • Instruction set - The set of instructions that the microprocessor can execute.
  • Bandwidth - The number of bits processed in a single instruction.
  • Clock speed - Given in megahertz (MHz or GHz), the clock speed determines
    how many instructions per second the processor can execute.