Computer

Computer- Its uses

Computer is one of the wonders of modern science. It has now become an essential appendage of modern life. It has greatly benefited us and brought about revolutionary changes in our life. It has made our way of life easy and less complicated.

What is computer: Any device that helps people perform mathematical calculations may be called a computer. A computer is basically a processor of information. In 1937 Mr. Howard Akin, an American scientist invented such a machine that could do difficult sums and it is called the computer. Today, however the term computers refers to a special kind of electronic machine that can perform mathematical calculations ad process large masses of information at a great speed. In a few minutes a computer can perform calculations that trained mathematicians would need years to do. What gives it such tremendous power and versatility is the fact that the information contained in it may be processed in many different forms, with text, sound, video and computer generated graphics being just a few common examples. The fastest computers can handle millions of problems in a few seconds.    

A computer consists of five major components. Firstly, it receives data. Secondly, It processes data by various computations. Thirdly, it emits data. Every computer has a machine language of its own and accordingly it works. The machine language varies from machine to machine.

Nowadays computer means digital computer. A digital computer can do hundreds of things more than an analogue computer. It not only keeps accounts but also finds out defects of other machine and tells about its solution. It has got its special language. The question is arranged through certain signals. This signaling is called a programmer. The question is sent to the receiver machine and the receiver machine sends it to the preservation machine. In the preservation machine thousands of words and numbers are arranged. They are its memory brain. The central machine carries out the order of the preservation machine and finds out the solution. Eventually the results come out the exit machine.

Types of computer: Modern day digital computers are of four types- micro computers,  mainframe computers, mini computers and super computers, each varying in speed, processing capabilities, physical size, memory size, disk storage capacity and cost.  Computers come in many different forms also. It is not only a monitor and CPU (central processing unit). Embedded systems such as ones in the washing machines or air-conditioners are also computers designed to do a single specific task rapidly. Expert systems which are capable of emulating human reasoning and Artificial Intelligence are also other forms of computer systems.

Various uses of computers: Computers can be used in various spheres. It is widely used in Banks, insurance companies, educational institutions for data storage, processing and output. Computers are also used for air traffic control, navigation, telecommunications of ships and aircrafts. It has brought new speed and accuracy to weather forecasting. In the field of medical diagnosis and printing computers are doing wonders. At present this machine has enabled mankind to cross thousands of miles within an hour. He can see the events of the countries thousands of miles away sitting in his room through the glass screen of his monitor by using a TV card in his computer. Nowadays many complicated tasks can perform computers. It can run play chess, business or even compose music. This is why; many people call the computer an electronic brain.

A new developing section of computer technology is robotics derived from the word `robotnik` meaning slave. As the name implies, they are made to help the humans in their tasks, especially the dangerous and hard ones. Until now, the uses of robots have been very limited, most commonly in the car factories. It is expected that the use of robots would be worldwide. Within very short time.