Analog Vs Digital

 What is the difference between analog and digital? What are the benefits of digital?

Analog signals use some sort of thing that's constantly changing to represent data. For example AM Radio uses signal with a constantly varying wave height or amplitude to represent sound. They can then be easily be decoded. While good, the drawback is interference, since the signal is so small. Analog technology uses 1's and 0's to encode information, rather than signals. 1's and 0's are representations of electrical signals. Digital transition is usually more reliable for longer distance. Digital data can easily be replicated without sacrificing your quality. Analog will slowly lose their quality if copied.