FYI, Java Posse is officially dead (as per episode 461: "The Last Ever episode of the Java Posse"). These are cool, but I don't want to LEARN, I just want to listen. It's hard to tell if there are an of these which are just developers BSing on a Friday or something.
The following are the components common to PCs in the order they're typically assembled: Case -- If you're using a laptop, the computer case includes keyboard and screen. For desktop PCs, the case is typically some type of box with lights, vents, and places for attaching cables. The size of the case can vary from small tabletop units to tall towers.