Not so many years ago, you hardly ever sawcomputers. Now they seem to be everywhere. There are also many hidden“ computers” in your home, but youmight be unaware of them. For example, there may be one inside your TV set, telephone or washing machine. You are more dependent on computers than youknow.
Computers are probably the best calculators in the world. They arefaster at calculating than people, and they rarely give wrong answers. They canalso type, print and draw things like diagrams and graphs. They can teach youmany things and also play games with you. More importantly, they can operaterailways and fly planes and spaceships. For these reasons, we sometimes callthem“ electronic brains”。
