The IBM personal computer contained the first motherboard, which was referred to as the “breadboard” and was released in 1981. The breadboard provided a platform for the computers RAM and CPU and also had ports for a keyboard, mouse and cassette tape.
When compared to modern motherboards, the planar provided the function of supplying a circuit board with expansion slots for other hardware devices. The original breadboard also provided a built in audio capability as well, while also having a system named a bus to manage the flow of information. The original breadboard provided a built-in audio capability as well, while also possessing an information transportation system, appropriately named a "bus," to manage the flow of information.