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Computers are machines that can be programmed to receive input, store and manipulate data, and provides output in a format useful. Although <br> examples of mechanical computer has been there through all recorded human history, the first electronic computer developed in the mid-20th century (1940-1945). This is a great size room, consuming force of several hundred modern personal computer (PC). [1] Modern computers are based on integrated circuits with millions of billions of times more capable than the early engines, and occupy a small portion of space. [2] Simple computer small enough to enter into a small pocket device, and can be activated by a small battery. Personal computer in the form of various icons and information era is what most people consider a "computer". However, the computer found embedded in many devices from MP3 player to fighter aircraft and toy robots from the industry the most. <br> ability to store and carry a list of instructions called programs makes computers extremely versatile, they distinguish fromcalculators. Church-Turing thesis is a mathematical statement of this flexibility: any computer with a certain minimum capability is, in principle, able to perform the same tasks with other computer can perform. Because the computer from netbook asupercomputer able to perform all the duties of computing the same, given enough time and storage capacity.