B - What Does That Motherboard Terminology Mean?
Basic Input Output System (BIOS):
The BIOS (Basic Input/Output System) refers to the program/software code residing in a ROM chip. It provides the basic instructions for booting up your computer and controlling computer hardware so other software programs such as the operating systems can be loaded and executed. It allows communication between the hardware and OS. This is where all the system settings are configured and stored. A BIOS can be upgraded if new features arrive.
Balanced Technology Extended (BTX):
As the next-generation successor to the ATX form factor, the BTX (Balanced Technology Extended) form factor specifies a new layout for heat-generating components on the motherboard, to allow in-line airflow for system cooling, reducing the number of fans needed, offering thermal headroom for future high power components, and enabling a broader range of standards-based system designs. There are smaller-sized BTX form factors as well, such as microBTX and picoBTX.
The bus often refers to a data pathway (sometimes called the power pathway) which transfers data (or power) between computer components inside a computer system or between different computers. For example, there is a front side bus to connect the CPU to the chipset, and there is the PCI bus to connect the chipset to PCI devices.