WHY COMPUTER IS IMPORTANT FOR ALL?

With computer and other way of information noone can be successful and work properly. Information and communication are the two most important strategic issues for the success of every industry or company. While today nearly every organization uses a substantial number of computers.To govern any company or organization in the way of success everyone need computer and fast way of information otherwise there appears many obstacles. To overcome these obstacles in an effective usage of information technology,computer networks are necessary. Computer networks can manage to put down the barriers between information held on several systems. We can build a borderless communication and information environment only with the help of computers. Computer networks provide communication possibilities faster than other facilities. Not only in the industrial areas computer has become important in every sectors like education, bank, NGOs and INGOs, many private offices and so on. In new generation there is being tried to make the education whole computerised. Wcomputers no one will be able to work and learn anything and step his life in forward direction. So computer is necessary for everyone in every sectors.

WHY COMPUTER IS A SYSTEM?

We said earlier that computer is a machine which does computation under specific wordy instructions. The computation job itself involves several other functions like reading the data, reading the program, outputting the result in a printed form in the desired format and so on. Each of these functions is done by separate functional units in the machine, but all of them act in coordination under common control. So we say that a computer is a huge system composed of several related functional units which act under a common control to achieve common objectives. A system is a composite entity made of inter-related elementary units or subsystems which jointly perform a task under the direction of a single control. The human being is a system, since it is composed of different functional units acting under a single control, the brain. In short, a system is a composite entity whose constituents work together for achieving a common goal. The constituents of a computer system also act together under a common control for doing the common job of data processing and so we say that the computer is a system.