What is the difference between analog cable and digital cable?
Answers:
analog is sent in current form. digital is sent in ones and zero.
Analog can only receive low 0-99. Digital cable channel possibilities are virtually interminable.
The previous two answers are correct as far as they go.
But within practical terms, your existing 1980s era TV can tune contained by analog cable only. Digital cable requires a decoder box from the cable company. To go a step further than the 3 correct answers so far...
Analog cable (a hugely delicate signal) travels down miles of cable up to that time arriving at your house. It is subject to all sorts of resonance injection and signal loss along the way. You see this as picture problems close to snow and ghosts.
Digital cable leaves the Cableco within ones and zeros. Those ones and zero are collected by your cable box and converted into a perfect rendition of what departed the Cableco. No ghosts, no snow, a immaculate copy of what they sent.