Computer Architectural

Computer is a group of parts that are grouped for the purpose of acheiving an objective ,called programs ,which are being executed qualifies itself is called computer system.
Computer System is a made of

• Input unit
• Output unit
• Central Processing Unit(CPU)

1. Input Unit:Input are the accumulation of the raw facts and instruction which are given to the Computers.Input devices are used to enter data and instruction into the computer .Some of the input devices are Keyboard,Mouse,Scanner,Touch Pad, Touch Screen,Joystick.Light Pen and so on.
2. Output Unit :Output are the information which are given by the computer after processing the raw facts and data.Output devices are used to show the information or to display output .Some of the output devices are monitor,printer ,speakerand so on.
   
3. CPU:Central Processing unit is the brain of the ocmputer. The CPU is the part of a system which contains circuitory to control the interpretation and execution of the instruction. All the work of processing,calculating and works is done in this unit. It controls ,monitors,manage and coordinates the activities of all the units computer by issuing proper components.This unit consist of three parts.They are

a. Memory Unit
b.Airthmetic and Logic Unit
c. Control Unit