 Computer is an Electronic device which converts raw data to provide useful information under control of a program so, computer is a device that computer at very high speed.
A programmable machine. The two principal characteristics of a computer are:
- It responds to a specific set of Instructions in a well-defined manner.
- It can execute a prerecorded list of instructions (a program).
Modern computers are electronic and digital. The actual machinery -- wires, transistor, and circuits -- is called hardware; the instructions and data are called software.
All general-purpose computers require the following hardware components:
- Memory: Enables a computer to store, at least temporarily, data and programs.
- Mass Storage device: Allows a computer to permanently retain large amounts of data. Common mass storage devices include disk drives and tape drives.
- Input device: Usually a keyboard and mouse, the input device is the conduit through which data and instructions enter a computer.
- Output Device: A display screen, printers, or other device that lets you see what the computer has accomplished.
- Central Processing Unit (CPU): The heart of the computer, this is the component that actually executes instructions.
In addition to these components, many others make it possible for the basic components to work together efficiently. For example, every computer requires a bus that transmits data from one part of the computer to another.
Computers can be generally classified by size and power as follows, though there is considerable overlap:
- Personal Computer: A small, single-user computer based on a microprocessor. In addition to the microprocessor, a personal computer has a keyboard for entering data, a monitor for displaying information, and a storage device for saving data.
- Workstation: A powerful, single-user computer. A workstation is like a personal computer, but it has a more powerful microprocessor and a higher-quality monitor.
- Minicomputer: A Multiuser computer capable of supporting from 10 to hundreds of users simultaneously.
- Mainframe: A powerful multi-user computer capable of supporting many hundreds or thousands of users simultaneously.
- Super Computer: An extremely fast computer that can perform hundreds of millions of instructions per second.
Know about computer?
Computer consisting data, information program processing with several characteristics such as speed, accuracy, storage multitasking automatically.
Know about AICSM
AICSM is a leading computer education network in all over India, having over 1400 affiliated centers. The organization has its command in 10 states and spreading gradually in such areas, where it needs literary with computer. The organisation covers village education to lower, middle and higher class people. The organization slogan is “there is still million people whose only dream of computer education, AICSM helping them to realize the DREAM.
All India Computer Saksharta Mission has been run to educate with Computer Basic knowledge is given to all free of cost our study centre provide 3 months training of computer Basic and charge cost of Bag, note book, I-card upto the examination only. SC, ST Handicapped candidate are benefited by means of conscession.
What is computer Shiksha
Computer shiksha is an effort to avail online source of information about the computer education on the web. Although thousand of websites are already there on the web this provides quality information about the various topics of computer. But there are very few where you can find each and every information about the computer. Our aim is to provide the basic knowledge of computer so that a common person can understand the need, role, importance and use of computer. we always welcome your suggestions, feedback and comments to make us better.
Computer is now used anywhere. Whether it is a small town or big city, Banks, Post office, Hotels, Railways, Air Ports, Hospitals, Schools College, Offices all are using computer for various reasons. It is became a compulsory in any field. Students can do studies a play games on computer.
|
