Computer is an electronic device which takes data as input through input device and process in CPU and gives output through output device.
or
Computer is an electronic device which is capable of receiving information (data) in a particular form and of performing a sequence of operations in accordance with a predetermined but veriable set of procedural instructions (program) to produce a result in the form of information or signals.
Full Form of COMPUTER
C = COMMONLY
0 = OPERATING
M = MACHINE
P = PARTICULERY
U = USER FOR
T = TECHNICAL
E = EDUCATION
R = RESEARCH
Types of Computer : (On the basis of Size)
Micro Computer: The processor is very small so that called Micro processor and device is called Micro Computer. Micro Computer is single user device example: Desktop, Laptop, Palmtop, Notebook, PDA etc.
Mini Computer: The processor of Mini Computer is small but larger than Micro processor. MiniComputer is multi user device generally used in designing company for commercial use.
Mainframe: It has larger processor and multiuser device. Number of users is more than MiniComputer. This is multiuser and multitasking device mostly used in Metrology.
Super Computer: The processor is biggest than other Computer and processing capacity is highest than other devices. It is Multi user fastest calculating device, generally used in nuclear science for calculation purpose. CRAY-I is the first Super Computer. India’s First Super Computer is PARAM-10000.
