The world of Information Technology remains incomplete without the use of Computer. The simplest definition of a computer is that it responds to a specific set of instructions in a well managed manner. These instructions are generally embedded inside the computer. A Computer can be broadly divided into three broad based divisions. The input devices in the Computer include the Central Processing Unit or CPU, key board, mouse and the system unit or the screen. The out put devices include the printer which delivers the information from the computer in paper form to the people. The hardware of the computer consists of the actual machinery like wires, circuits and transistors. The instruction and the data inside the computer are known as software. A proper combination of hardware and software alone can give you a Computer in a functioning stage. Unlike other electronic gadgets a Computer has a memory that stores all processed data obtained and delivered at a given point of time. The mass storage device of the Computer allows it to permanently remember a huge amount of data. With the introduction of Internet Computer today rule the world. No physical distance between two places can ever affect the passage and delivery of messages. Apple, Bose, Wipro, LG, Samsung and IBM are some of the leading producers of Computer in the world. Beginning from office work to governmental files all is controlled and maintained by Computer to day. Every computer is well equipped with a bus that transmits information from one compartment to the other within the machine. A super Computer is able to perform millions of tasks within seconds . On the other hand the main computer in any corporate house or large operational system is responsible for connecting and maintaining thousands of other computers connected with the main computer.
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