Multi and Single source Amplified Keypad for A- BUS AB-134 Replaces AB-124

alright next in our series on multiplexers we're going to start talking about the bus width of the data line right rather than just having one bit for input like we'll have lines that have multiple bits for input so early on in communication systems right a bus was used to describe any sort of communication system or set of wires the transferred data between components in a digital computer system and so most of the early buses were parallel in terms of if we look at this picture down here in the lower right this parallel interface example means all of the data so here if there's 8 bits of data d0 through d7 they were all transferred in parallel at the same time which required 8 different wires by as digital systems grew larger I did parallel wires were not practical putting that many wires in the system and so a lot of communication went to serial communication where you have multiple