(a) what is computer? (b) How was computer invented? (c) How does a computer work? (d) How many kinds of works can do with a computer? (e) What type of life do we lead nowadays for the invented of computer? (f) How has it changed our life and the world?
A computer is an electronic machine that can store, organize and find information, do calculations, play music and games and control other machines. It also can perform many others functions. It has no capacity to do anything by itself. It works on the basis of commands given by the operator. The invention of computer has a long history. It was not invented overnight. It took a long time and hard Labour to invent computer. A computer has five major components. They are the input unit, the output unit, the memory unit, the control unit and the arrhythmic unit. A computer performs three basic functions. Firstly, it receives data, secondly, it process data by various computations, and thirdly it emits data. It helps us doing our gigantic and complex works within a surprisingly short time. It can also help us find out data and information. It has eased model to a considerable extent, we watch many recreational programmes on it at our leisure period. So, it helps us many ways making our work easy and enjoyable. We can study computer at different institution both at home and abroad. If we just want to know the elementary uses of computer, we can take the help of any renewed computer training Centre. But if we want to have or gain a greater idea of computer, we get ourselves admitted to a university to study computer science. Nowadays at every institution, both govt. and Non-govt., such as bank insurance, commercial enterprise, retailers, offices, educational sections, and medical science etc. computer is a most. It is like Aladdin’s lamp. We cannot go a single moment without computers. It is now a part and parcel of our daily life.