INTRODUCTION TO COMPUTERS
“A Computer is an electronic device that stores, manipulates and retrieves the data.”
We can also refer computer computes the information supplied to it and generates data.
A System is a group of several objects with a process. For Example: Educational System
involves teacher, students (objects). Teacher teaches subject to students i.e., teaching (process).
Similarly a computer system can have objects and process.
The following are the objects of computer System
a) User ( A person who uses the computer)
Hardware of a computer system can be referred as anything which we can touch and
feel. Example : Keyboard and Mouse.
The hardware of a computer system can be classified as
Processing Devices (CPU)
ALU: It performs the Arithmetic and Logical Operations such as
&&, || ( Logical Operators)
CU: Every Operation such as storing , computing and retrieving the data should be governed by
the control unit.