Transcription: Personal computers, or PCs, come in many shapes and sizes. Whatever your need, there is probably a PC designed for you. It is important that you know the different types or platforms of PCs so that you can make better PC purchasing decisions in the future. Pictured here are three different PCs. We can group these PCs into two main categories. The IBM, or IBM-compatible PCs, and the Macintosh. or Mac. IBM makes the IBM PC. Other companies make clones or copies of the IBM PC. Apple Computer makes Macintosh or the Mac. As you can see here, both the PC and the Mac look very similar. However, these ...