The first major computer components, and that no computer can do so without, is the motherboard. This is the basic unit that connects all other components of the system, and is often called the heart of the computer. The CPU (Central Processing Unit or) on the other hand, the brain. The CPU runs all applications on your computer, start the operating system work in your word processor.
Memory (RAM) is a component of the computer the most important, to allow the operating speed. RAM is the memory area where your computer records, it is to work with during the operation of an application. The amount of memory on a computer determines the speed with which they can perform any operation. » Read more: Essential Computer Components