Definition of Computers

Definition of Computers

A  computer  is  a  programmable  machine  or  device  that  performs  pre-defined  or programmed computations or controls operations that are expressible in numerical or logical terms at high speed and with great accuracy.

Characteristics of Computers

1. Speed
2. Accuracy
3. Automation
4. Endurance
5. Versatility
6. Storage
7. Cost Reduction

Basic Operations of Computer

• It accepts data or instructions by way of input.
• It stores data.
• It can process data as required by the user.
• It gives results in the form of output.
• It controls all operations inside a computer.

Applications of Computer

• Word Processing
• Internet
• Desktop Publishing
• Digital Video or Audio Composition
• Mathematical Calculations
• Robotics
• Weather Analysis

Comparison Between Computer with Calculator

S. No.	Characteristics	Calculator	Computer
1.	Speed	Fast	Much Fast
2.	Performance	Simple Calculation and numeric processing	Complex problem and non- numeric processing also
3.	Memory	Less internal memory, no permanent storage, temporary storage only	Large internal memory and large permanent storage available
4.	Machine	Electronic Device	Electronic Device
5.	Operation	Arithmetic	Arithmetic and logical

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