Looking Inside a PC Console
You may want to see the components that make up your PC console, the PC’s guts. For a peek inside a PC (without having to dissect your own), look no further. A PC’s insides are shown in this figure, which is a sideways view of a typical mini-tower PC — as though you removed the right side of the console and looked inside. (In the figure, the left side represents the front of the console.)
Missing from this figure are the myriad cables that festoon the console’s interior space; the typical PC’s console is a lot less roomy. And, if you’ve owned the computer for a while, some dust is in there too — maybe even cat hair!
The three main parts of the console’s tummy are
The disk drive cage: A contraption used to hold internal disk drives, an optical (DVD) drive, and a hard drive. The cage also has room for even more disk drives (the so-called future expansion).
The power supply: Feeds the console that all-important stuff called electricity.
The motherboard: The computer’s main circuitry board.
Everything inside the PC’s case is a modular component: Individual pieces can be replaced without having to toss out the entire console. Modularity is one of the keys to the PC’s success over the years.