BUS: A bus is a grouping of wires that allow the flow of data from one area of the computer to another. It is thought of that a bus represents a highway that the data travels through in the computer system. In personal computing, some refer to a bus as the Internal bus which connects all of the devices to the CPU and memory. Also, you may hear the term expansion bus, which connects the expansion board with the CPU and memory. All buses are made up of two parts a Data Bus and a Address Bus. The data bus is responsible for the actual data transfer whereas the address bus will route the data to the proper place. The size of the bus, which is measured in width is the amount of data that it is able to transmit. For instance, a 16 bit bus will be able to transfer 16 bits of data and a 32 bit bus can transfer 32 bits a data.

 

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