PC

the PC has started what may be the most significant revolution in computer since the development of the original mainframe. The original idea of the computer was to provide a vast central processor that could handle heavy-duty number crunching. They ended up in large rooms maintained by MIS departments. Today the PC is on desks, in homes, connected to phone lines, networked into huge webs. Computing power has become dispersed among the masses. There are still supercomputing centers, shrines to an older way of computing, but they are growing fewer in number, less splendid in their power. Personal Computers are out of control.