CPU - Central Processing Unit

Processing unit is also called 'central processing unit' and it is the control center for a computer. It guides, directs and governs all operations and components inside the computer. So, it is considered as a brain of the computer. It is linked with various peripherals equipment's including I/O devices, secondary storage and memory unit. It performs mathematical computation, logical comparison, executes instructions and transfer information between all parts of computer. Generally it is responsible for the following functions:
  • To control and coordinate all the operations and other components of the computer system.
  • To carry out processing.
  • To give commands to all the other components of the computer system.
  • To control the sequence of operations in the computer system.
  • To interpret the data, instruction and information in the computer system.