Could d.c be counted as a signal? I'm new at electronics and I have this question in front of me, Which one of the following signals is in common use in electronics.
1)Continuous d.c ,2) Frequency modulated ,3)Constant amplitude a.c, 4)Interrupted a.c , I strongly suspect the last two cannot be the answer, but I'm getting mix up with the first two though.
1)Continuous d.c ,2) Frequency modulated ,3)Constant amplitude a.c, 4)Interrupted a.c , I strongly suspect the last two cannot be the answer, but I'm getting mix up with the first two though.