Computers

The term computers refers to electronic devices which accept data through input devices, process them in a pre-designed fashion as per the instructions fed into it and later on produces the required output through the output devices. Computers are now days a personal assistant at home and offices alike and are absolutely essential for processing data, storing information and helps in quick communication with the help of Internet. The initial digital computers were huge and expensive ones and were predominantly in use only in government offices and specific organizations engaged in research work. The advances in technology saw the birth of microprocessors, which reduced the cost of computers, and the eighties saw the computers at every desk and table for performing multifarious tasks. Everything from weather forecasting to information from around the globe to difficult calculations to even information from the space is just a click away with this magic machine in hand. The computers function with the help of input devices and output devices, central processing unit, arithmetic and logic unit and the memory centre. The input and the output devices include the keyboards, floppy disks, monitors and printers all of which function in perfect coordination to give out the desired results. The product is in such a way that is comprehensible to the user. The memory centre in computers consists of a series of cells; each one of them contains some information and has a particular identity. The cell functions as per the data on it or may instruct other cells as to how to carry out the instruction. Therefore, such instructions or data on the cell can undergo changes from time to time as per the need. The arithmetic and logic unit is the main mathematician behind the smooth functioning. The central processing unit in computers is the main boss and controls the entire system. It keeps an eye on the other units, whether they are performing as per the instructions fed into the system and whether the result is appropriate. All this is according to the memory of each individual unit and it is responsible for decoding the human language into machine language and vice-versa.

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