Buses

Communication between components in  the CPU and input and output devices is via buses.
 A bus is a path down which information can pass.
The system bus also known as the (front side bus) - contains 3 different types of bus.:
(When in the CPU, these are the descriptions)
- Control- This carries control signals to help manage the whole process. Has constant contact with the control unit on the CPU
-Data- Constant contact with the memory data register
-Address- Constant contact with the memory address register, contains the location of where the data will be going.

The data and address bus carry data in tandem, as the data goes along the data bus the address bus contains the address of where the data will be going.

A bus is a path down which information can pass. The system bus or front side bus is made up of 3 other buses: control. data and address bus. Buses are used throughout the whole system or register to register. The data (communicates with MDR)and address bus (communicates with MAR) will run in tandem, one carries the data, one carries the address of where it is going. The control bus (communicates with the control unit) will send commands to the different components of the system carrying control signals from the control unit.