A computer is capable of performing computations and making logical decisions at speed millions (even billions) of times faster than human beings can. For example, many of today's personal computers can perform a billion additions per second. A person operating a desk calculator might require a lifetime to complete the same number of calculations a powerful personal computer can perform in one second. (points to ponder: How would you know whether the person added the numbers correctly?) Today's fastest supercomputer can perform a hundreds of billions of additions per second! And trillion-instruction-per-second computers are already functioning in research laboratories.
Computers can process data under the control of sets of instructions called computer programs. These computer programs guide the computer through orderly sets of actions specified by people called computer programs.
Computers can process data under the control of sets of instructions called computer programs. These computer programs guide the computer through orderly sets of actions specified by people called computer programs.
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