COMPUTERS

computer is a machine designed to step programmable and automatically perform a sequence of arithmetic or logical operations. Particular sequence of operations can be easily changed, allowing the computer to solve more than one type of problem. Conventional computers are composed of some form of memory for data storage, at least one element that performs arithmetic and logic operations, and a sequencing and control elements that can change the regulate of operations based on in sequence that is stored. peripheral devices allow information to be entered from the external source, and allow the results of operations sent out. A computer processing unit executes the series of instructions to make them read, manipulate and then save the data. conditional instructions to change the order of instructions as a function of the current state of the machine or its environment. Computer is a machine to automatically perform computer calculations is one of the most powerful human invention in history. By using the computer, people will suddenly make a staggering amount of calculations with dazzling speed. May lack information, organized, and displayed in the blink of an eye. As technology continues to advance, the computer will no doubt become even more prevalent - and in many cases, perhaps even less familiar. Computers can be generally catogarised by size and power as follows, although there is considerable overlap