What does a computer processor do?
The CPU (Central Processing Unit) is essentially the brain of the computer. It interprets and executes instructions and data contained in software programs. The more generic term “processor” is often used to refer to a CPU as well, and the more specific term “microprocessor”, meaning CPUs that are manufactured on integrated circuits, is also widely used nowadays. These three words mean exactly the same thing in this article, and elsewhere in most cases. As the brain of a computer, the processor (or CPU) plays a defining role in the total PC system. The performance of a PC system is roughly determined by the processor, so choosing the right processor is key when building your own computer. The other components, such as RAM and hard disk drive, also play important roles, while the video card is crucial when it comes to 3D graphics performance.
