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A computer is an electronic machine that processes information – in other words, an information processor: it takes in raw information (or data) at one end, stores it until it’s ready to work on it, chews and crunches it for a bit, then spits out the results at the other end. 1_______. Taking in information is called input, storing information is better known as memory, chewing information is also known as processing, and spitting out results is called output.
Your keyboard and mouse, for example, are just input units – ways of getting information into your computer that it can process. 2_______. Your computer probably stores all your documents and files on a hard-drive: a huge magnetic memory. But smaller, computer-based devices like digital cameras and cellphones use other kinds of storage such as flash memory cards. As for output, your computer almost certainly has a screen and probably also stereo loudspeakers. 3_______. Your computer’s processor (sometimes known as the central processing unit) is a microchip buried deep inside. 4_______. That’s why your computer has a little fan blowing away – to stop its brain from overheating!