• The system bus is a data transmission line made up of cables and connectors that connects a computer's processors to its primary memory. The bus serves as a conduit for data and control signals travelling between the computer system's primary components. The function of the system bus is to combine the functions of the three primary buses: data, address, and control. Each of the three vehicles has its own personality and set of tasks.
• The system bus combines the following functions of the three primary buses:
• The control bus transports control, timing, and coordination signals for managing the system's many functions.
• The address bus is used to define memory locations for conveyed data.
• The data bus is a bidirectional route that transports data from the processor to the memory and peripherals.

Read More: What do you understand by the term ‘transistors’?