Most computer users are familiar with terms such as chips, hard drives, and RAM. But what is a chip and what does it actually do? What does a hard drive look like and how does it work? Although the details of what lies under our computer cases is changing rapidly, the underlying design remains relatively stable. Aided by illustrative graphics, this program looks at the functions of the main components of a PC. It also covers a brief history of the development of the PC's main, or mother board over the past 15 years.