9 Buses and Protocols
9.1 Buses

Bus is a group of structured signal wires, which can be divided into the groups of control, address and data wires. Buses can be classified as serial and parallel ones. In the case of parallel buses, data words are carried over multiple wires simultaneously. In the case of serial buses, data words are carried in bit-serial form. Bus is intended to ensure the transmission of data and control commands between two or more electronic devices. Data transmission on the bus is ruled by an established protocol.

In the case of modular architecture of electronic devices or computers, bus is equipped with connectors adapted to connect the modules.