In a computer or on a network, a bus is a transmission path on which signals are dropped off or picked up at every device attached to the line. Only devices addressed by the signals pay attention to them; the others discard the signals. According to Winn L. Rosch, the term derives from its similarity to autobuses that stop at every town or block to drop off or take on rider. Depending on the number of lines (8, 16, 32, 64) 8, 16, 32, or 64 Bit can be transported. The width of the bus states, how many bits the processor can send to its connected peripheral at the same time (e.g. to an external cache).