" As you can see,"said the professor " the mother board and is the main part of the CPU or central processing unit.""If you want to be a computer repair man, you will have to learn how these are connected and how circuits work. We will learn all of is information later this month. Now, who brought their input device?" 20 of the 20 students raised their Pen drives. " Good." said the instructor " Okay, now how many of you know what an output device is?...