Cathal Garvey About Me Page at Helium

Computers & Technology > Computers & Technology (Other) What digital means: 3 of 3

It's easy to get bogged down by jargon when trying to find a definition for "Digital Technology". In actuality, it's quite a simple, elegant concept. Historically, electronic signals would send messages across the wire or radio which differentiated between letters/numbers/sounds by using different 'volumes' in the signal. The strength of the signal, or the frequency of the signal, were used to spell out the message by changing or modulating them. The difficulty with this approach is that interference on the line or in the air can change the volume or the frequency of these signals, sometim...
More..