Why can more information be carried by digital signals than analogue signals?
This is technically untrue from a classroom point of view. Analog signals can, theoretically, convey much more information than can digital signals. Think about it. A voltage of 3.00003 could mean one thing and a voltage of 3.000031 could mean another; each of the infinitely many voltage values could be a different piece of information. Rather than having binary bits, you would have infinite bits. The problem arises when you consider noise and imperfection in your communication system. If you assume that your environment will corrupt your (one wire) signal, then your receiver may not be able to tell the difference between 3.00003 and 3.000031. Additionally, the transmitter and receiver will be imperfect, further decreasing the range and resolution of the signals you can send. Alternatively, if you have a one wire digital communication system, you can only transmit one binary bit of information at a time. Noise and imperfections in the hardware should not have an effect on the reading o
