Computer gyan

What is operating system ??

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Characteristics of a computer
i) Speed,
ii) Accuracy,
iii) Diligence
iv) Versatility
V) Automation
Vi) Storage capacity
Vii) Retrieval
VIII) Reliability
Ix) Cheaper ( Reduction of Costs )
X) No Thought

Compute-Defination
1) A computer is a machine that can accept input . input could be entered by a human typing at a keyboard , received over a network , or provide automatically by sensor attached to the computer .

2) execute a mechanical procedure , that is, a procedure where each step can be executed without any thought.

3) produce output . output could be data displayed to a human through display monitor ,but it could also be anything that affects the world outside the computer such as electrical signals that controls how a device operates .