If you're wondering what is a CPU, then it's time to find out exactly what it is and how it works. A central processing unit, or often referred to as a central processing board, is the heart of your computer. This is a single device, which handles all the information from your computer so that you can get your work done. So what is a CPU, and why do we need one in order to have more power in our computer? A CPU is a microchip that is used by the CPU for programming the PC. The CPU itself is comprised of a central processing unit, which makes the decisions as to when and where to run programs or how much power to use. When you use the computer, it has to process all this information in order for it to run efficiently, so why would you want to change your CPU or add any extra parts to it? The microprocessor inside your computer is the same as a computer running Windows XP. You'll find that the operating system is designed to allow your computer to run smoothly and with the le...