The idea of computer parts isn't new to the human race. It had been devised in the end and from the time of its creation has gone through important changes. This device is extremely crucial for working in the modern world and today PCs have begun slowly more backward then other latest gadgets like notebooks and tablet computers. In a world where everyone needs their work to be done faster and in a hassle free manner PCs seems to be among the solutions. This machine is not just one device it is composed of several smaller devices that combine to form one appropriate running device. To use this device or to understand it one must know what it is composed of.