introduction to computers

Introduction of Computers Introduction Now a days computer is a very common and useful device. You would have seen it, if not then we hope you would have operated calculator. Computer is just larger and very powerful than calculator. In some way it resemble to calculator.To know about computer we must know about calculator. A Calculator is an electronic device that is used to perform numerical calculations. It has less memory and data cannot be stored for future use. We can take output only on the screen but not in printed form. Difference between Computer and Calculator: Computer Calculator 1. Computer Works faster than Calculator. Calculator is slow. 2. Computer has more memory. It has very less memory. 3. It Provide facility to use alphabets as well as numbers. In calculator we cannot use alphabets. 4. It provides facility to store output in printed form. Here we can only take the output on the screen. When in early 80’s computers were not very common & were expensive calculator were most commonly used device for calculations but now computer has just taken place of calculator because of its better feature. Definition of computer The word ‘compute’ means to calculate, so ‘Computer’ means the device, which performs calculations. It is an electronic device that is used to store any kind of data. • It takes data, stores the data, processes the data and gives the desired output in the desired format. • Hence computer acts as a device that transforms data into information. Data can be like name, age, height, weight etc of a person.