COMPUTER

The word computer is originated from the term "computare" which means to calculate.Hence calculations ranging from simple to complex  can be easily solved by this machine.Computer is an programmable electronic device which accept the data from the user through input devices ( keyboard, mouse ), processes it at an extremely high speed and provides information through the output devices like printer and monitor.It is the most widely used electronic device known . In fact, computer and telecommunication technology combined together has changed the way we do our activities, the way we talk, walk, work or deal.

                                     This world has been transformed into a small global village due to computer so that people on any corners of the world can reach with each other. computer and its technology has been playing important role in every sector of our daily life. Computer has strengthened our capacity in information processing, storage, numerical computations and soon. Computer has been an indispensable machine to increase the efficiency and effectiveness of every person, students, organization, industry and many more. Computers can be understood properly if we have knowledge about its applications and characteristics.

                   Computer has become a basic need of most of the people as it is playing important role in day to day life.Present computers are highly capable of performing task at an extremely high speed.Its speed differs from one computer to another i.e MIPS( millions instruction per second) to TIPS (Trillion Instructions per second). In addition to being very fast, it is a very accurate device.It gives correct output if the input given by user is correct else it gives wrong output.This feature of computer is called GIGO ( garbage in garbage out).Similarly, it is reliable and has high storage capacity due to which large amount of data and programs can be stored for future use.Due to its versatility  it is used in various sectors like communication, entertainment, education, employment, industry, e-commerce and soon.

       In spite of all these advantages computers do have some disadvantages.It can be dangerous if it is misused.Every person cannot be updated with the the updates in components of computer and its latest technology.Also, computer is very expensive device.cracking and hacking of files result in large amount of heavy loss.Computer viruses are other irritating problems of computer.They are also main source of cyber crimes.Thus, if it is used properly, its really a boon for this 21st century because at present people are TOTALLY dependent on computer.