The motherboard is the main circuit board on the
computer. The CPU, memory, and storage components,
among other things, all connect into the motherboard.
Motherboards come in different shapes and sizes,
depending upon how compact or expandable the computer
is designed to be. Most modern motherboards have many
integrated components, such as video and sound
processing, which used to require separate components.
The motherboard provides much of the bus of the
computer (the term bus refers to the electrical connection
between different computer components). The bus is an
important determiner of the computer’s speed: the
combination of how fast the bus can transfer data and the
number of data bits that can be moved at one time
determine the speed.