In case you were thinking about building your own:

• The PC case or enclosure
• The PC electrical system, including power supply and cabling
• The CPU
• Various forms of storage that vary in speed and capacity, including:
• RAM
• Hard disks
• Optical drives, including CD and DVD drives
• Floppy disk drives (these are uncommon on many PCs nowadays, especially Home Theater PCs)
• A motherboard

...and so much more!

...via Digg