Ok, I’d like to state that I know this may be an elementary question, but if I don’t ask, I won’t learn right? So let’s say data is being transferred over say a SCSI bus from one HD to another... I understand that it may have for instance a bus width of 8 bits, and that each bit has its own data signal. So for a bitstream of 00100100 that is sent, a certain voltage (or no voltage) is sent down each data line. My question is, if a voltage indicating a digital value of 1 is to be sent, where does the voltage come from? Does the voltage come from the power supply? How is it manipulated (in a broad generalised way) to send a 1 or a 0 over the bus?
Hi, I think it has something to do with logic gates, but its been a long time since my electronics class. I'm going to have to do some reading...
