The computer is an electronic device which converts data into meaningful information. The computer is the wonder of modern science and technology. It can acquire, manipulate, reproduce and communicate data at a very high speed, maintaining a high level of accuracy. Data processing involves three basic activities- collecting, manipulating, and managing output.What is a Computer || History of Computer || Usefulness of a Computer
History of Computer
Charles Babbage is known as the father of the computer. During the first decade of the 19th century, he developed a machine which provided a base for the modern computers. The first automatic electronic computer was made in Pannsylvania in 1946 and known as ENIAC (Electronic Numerical Integrator and Calculator). Since then it has changed the pattern of doing work easily and quickly. It has also revolutionized the whole world.
Kinds Of Computer
There are three types of computers. They are digital, analogue and hybrid. The digital computer is basically a counting machine. A small digital computer is able to multiply, divide, subtract and add, all at high speed, which are electrically powered and operated by hand like type writers. Larger digital computers receive data or information on punched-cards or magnetic tape. The analogue computers are specially designed to deal with particular problems such as guiding Moon rockets. The hybrid type of computers consist of the combination of digital and analogue computers.
Usefulness of a Computer
Now a days the computer plays a useful role all over the world. The computer is an enormous flexible tool which can be used in homes, in factories, in schools, in hospitals, in offices, in hotels etc. It can be used depending on needs and available resources.
The computer helps us to formulate budgets, keep track of instruments, maintain a mailing list and do everything whatever we command it. In offices, it does every kind of business, maintains records, files, prepares payrolls and what not. In hospitals, computers are on hand to diagnose diseases, help in doing painless surgeries. They have helped many a blind to see and deaf to hear. They are used in international games. Computers are further used as resources in teaching and learning at all levels of education and training. Children can play different educative games, make drawing and paintings and watch films and songs on computers. At present, we can communicate with other computers through Internet system. We get all kinds of information through computer internet. This system is called W.W.W. (world wide web). The whole world of Internet is called cyberspace.What is a Computer || History of Computer || Usefulness of a Computer
Disadvantages of a Computer
Computers can work very fast. They can perform the work of hundreds of persons in a day. In this way the use of computers in public and private offices will increase the problem of unemployment. Regular operators of computers may suffer from eye problems, like fall of eye sight cataract, body pains, miscarriage and birth defects. Moreover, children waste their valuable time by playing games on computers.
Conclusion: The computer is a boon for the world today. The vast need of people in different fields is met up with the usage of computers. Hence, the invention of computers has proved a grand success of modern science and technology.What is a Computer || History of Computer || Usefulness of a Computer