BASIC STRUCTURE OF A COMPUTER SYSTEM
Computer Function A computer performs action and accomplishes its task in three basic stages namely:- INPUT – Input is the data that is fed into the computer by the user. PROCESS – Processing refers to the series of action by which the computer converts raw data into information. OUTPUT – Output is the result which is termed as information. Input Unit Data and instructions enter a computer through an input unit in a form that depends upon the input device used. Ex- Keyboard, Mouse, Joystick, Scanner etc. CENTRAL PROCESSING UNIT (C.P.U) CPU is also known as the brain of the “Brain of Computer”. As it appears as a hardware component, but it is also a functional component of a computer system. Functional Elements of a CPU 1. Arithmetic Logic Unit(ALU) 2. Control Unit(C.U) 3. Memory Unit(M.U) Arithmetic Logic Unit : - ALU performs mathematical calculations(addition, subtraction, division, multiplicati