System (motherboard) PC board
What is motherboard – the second most important component in the device of a personal computer. In addition to the term “ System board ,” the name “motherboard” is used. The main purpose of the motherboard is to connect all the nodes of the computer into one device, so, by and large, this is just a set of wires between the contacts of the processor and the contacts of the memory modules and peripheral devices. All other elements located on it carry secondary functions, serving only for decoupling and matching signals. Of course, some unit on the motherboard may be proudly called the “controller”, but even in this case its purpose is to perform auxiliary functions.