How is digital TV different from analog?

This clip makes two points. First, analog’s signal is different than digital’s because it talks to the tuner in a different way. Second, the only thing that’s changing in your television is that it needs a new tuner to understand the digital signal. Bill Hayes and Gary Sgrignoli explain. Visit or call 1(800)532-1290 for more information. See also Step-by-step DTV: