Computer is The Great Invention of 20th Century

Computer is The  Great Invention of 20th Century

Let look's little on Computer's history and its present place in the World

A computer is a general device that can be programmed to carry out logical or arithmetic opreations automatically. It responds to a specific set of instructions in a well defined manner. It can solve more than one kind of problems because the sequence of opreations can easily be changed.

Computer is the great invention of the 20th century AD. The first computer was costly and very large in size. It could hardly be move from one place to other. Only big companies and big offices had computers. Later, with the passage of time computer was also developing by scientists. It changed many shapes of it and now it is so developed and cheaper that every one can buy it and use it.

As computer is a machine, it is divided into many parts.

1: Monitor

2: System Unit   ---> It has two drives, CD/DVD drive and Floppy disk drive

Another drive is hard disk drive 

3: Modem

4: Mouse

5: Speaker/Microphone

6: Printer

7: Keyboard

8: Flash Memory/card reader

Computers are of the following types:-

1: Personal Computer  ---> A small, single user computer.

2: Workstation  ---> A powerful single user computer.

3: Minicomputer  ---> A multi user computer.

4: Maniframe  --->  A powerful, multi user computer.

5: Super Computer  ---> An extremely fast and most powerful computer.

Computers can quickly store and retrieve large amount of data. It can execute a prerecorded list of instructions. Computers can perform complex and repetitive procedures quickly and precisely. It can perform complex calculations in seconds.They can be used as a audio/ video player. With the help of computer we can perform our office work quickly and precisely. Now we can contact each other on our computers/laptops with the help of internet.

Computer is developing day by day. With the invention of microchips, the size of the computer become smaller and smaller. Now it is also available in the shape of laptops and tabs, which are its latest modified forms. These are very popular in every kind of people.