Introduction In this paper I will discuss the industry structure and the behavior of firms in the Personal Computer Industry. The personal computer industry has five leaders: Compaq Computer Corporation (CCC), Dell Computer Corporation, International Business Machines (IBM), Hewlett-Packard, and Gateway, (Industry Survey, Apr. 2000). The PC industry, as discussed in the paper, is comprised only of home/business use machines, not mainframes, databases, or any kind of servers or super-computers. The PC industry is a fast-growing, consumer-based oligopoly. I will prove the latter through the use of industry characteristics and firm behaviors by giving an overview of each leading firm and their beha