The main bus on the motherboard is the control bus. The control bus is used by the Central Processing Unit to monitor and direct the actions of the other functional areas of the computer.
front side Bus...(FSB) or System Bus
System Bus or Front side bus
Front side bus, which is part of the mother board
The bus between the CPU and memory on the motherboard. Also called the memory bus, front-side bus, local bus, or host bus.
The main function of the front side bus is to connect the computer to the motherboard. It also connects the computer to the RAM or random access memory.
For computers its mother board or more politically correct system board. For electronics in general its the integrated circuit(IC).
address bus
The SM Bus Controller, or System Management Bus, is installed on the motherboard. It was developed by Intel. It varies on the specific place according to the motherboard.
A motherboard can have more than one bus and each using a different protocols.
Host Adapter
The main circuit board of the computer is the motherboard.
The bus that connects the CPU to main memory on the motherboard. I/O buses, which connect the CPU with the systems other components, branch off of the system bus."The system bus is called the frontside bus, memory bus, local bus, or host bus."See the Related Links below.