basics of computer system

In this blog you will learn the basics of computer system and main components of computer.

The term computer is derived from the word compute. The word compute means to calculate. A computer is an electronic device which takes input from the user, process it and gives you the required results in a specific format. A computer works mainly on following principles:

1. Input: Taking the input in the form of instruction and data.

2. Process: Processing the instruction and data and store the results.

3. Output: Display the stored results or output it into  the print format.

A computer is a system that integrated with different components or parts which are used to solve any general purpose problem by executing suitable program. To understand how the whole system works, consider this.

This diagram shows the basic components of a generalized CPU. An actual CPU may have these components or other with different names that provides the same function.

1. Primary Memory: To store data and programs temporarily. For example,RAM.

2. Secondary Storage Devices: A mass        storage device to permanently store. data for future use. Common mass. storage devices are Hard Disk, CD, DVD, Pen Drive, Blue Ray Disk, etc.

3. Input Devices: Input devices such as keyboard and mouse can be use to enter data and instructions into computer.

4. Output Devices: Output devices such as  monitor (screen), printer, or other such devices let's you see what the computer had processed.

5. Central processing unit: The part of the computer that executes instructions (does the computing).

6. Operating System (OS): A program that lets you access the computer's contents and runs program.

7. Applications: Programs that accomplish a specific purpose to help you get your work done (such as word processing or calculating formulas).

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