All the things in the computer is attached to motherboard. The main thing in computer is the motherboard. The chips in CPU has a gold square in back of it and it is cold if you touch it because when it is working it will get warm so it will not get warm alot. In motherboard there is a switch that the keyboard is connected to it. Bios chips puts up the system. This tells the computer what to do. PCI is a kind of connecter to motherboard. PCI is attached to the motherboard. Chipset is to control motherboard. Most of the things you buy, it will attach by a PCI to computer. You can put and take information from RAM. Whenever there is more RAM, there will be more information. The size and speed of RAM is more important to look when buying it. A hard drive is like a storage but memory is where you need the information from it. That is the difference between them. When the computer is off windows is in hard drive.We need to look for the model of CPU first. The two kinds of CPU are INTEL and AMD. If we want to buy one we must look for the speed. The more electrocity you have in it with more speed your work will be done. We should look and see how much should the speed of processer be, then we choose to buy INTEL or AMD. If in computer one thing is slow and does not work the computer will get slow and will not work, too. The standard size of megabit is. Network connecter wire is attached to back of the computer, without this the internet does not work. ID is connected to motherboard, too.