Transcription: The motherboard is your PC's main circuit board. Every part in your PC has access to this board by a direct connection or through some type of cable. The motherboard is like a freeway that transfers data and instructions from one place to another. This freeway is called the bus. As your PC's bus gets wider, your PC gets faster. Now let's take a quick tour. The CPU or central processing unit is the brain of the PC. It tells everyone what to do. The CPU comes in different models and different speeds. A new generation comes out about every two years. RAM, or random access memory, helps your PC to ...