A computer accepts data, performs logical and arithmetical operations, and outputs the data required. It does this extremely fast and has a great memory to store it all. Or a 28,800 baud modem. Software -consists of programs which do a particular task. The hardware and software combined, process the data you input and then outputs the resulting data.
Data can be words, numbers, graphics, sounds, or movies.
These use a type of Unix operating system. Micros -Largest sales 1. Dell, Micron, IBM , and Compaq. The higher the number the more powerful the processor. The lowest you can buy now are 166.