What is PC? PC is an acronym that stands for personal computer. They are those smallest, inexpensive and most familiar kinds of computers largely owned by individuals. They are also called micro computers. They can fit next to a desktop or can be carried around. They are most widely used and fastest growing type of computer. Micro computers are of several types they are: (PDA) and Palmtops. Desktop PCS, Tower PCS, Lap tops, Notebooks, Desktop PCS Personal digital assistance Desktop PCS : These are those in which the case or main housing sits on a desk, with keyboard in front and monitor often on top. Desktops are small enough to fit on top