what can computers do
computers and microchips have become part of our everyday lives we visit shops and offices which have been produced on computer, we pay bills prepared by computers. just picking up a telephone and dialing a number involves the use of a sophisticated computer system, as does making a flight reservation or bank transaction we encounter daily many computer that spring to life the instant they're switched on (e.g. calculators. the car's electronic ignition, the timer in the microwave, or the programmer inside the TV set), all of which use chip technology