I am new to this site and field too.I always thought analog is continuous and digital signal is discrete. I read this today and got confused about analog signal
Analog can be continuous time(CT) or discrete time(DT). A discrete time signal is not a digital signal; a discrete time signal is one in which the amplitude is a continuum, and not discretized. On the other hand, if the time is discretized, this signal is still analog. Only when a discrete time signal is passed through an A to D converter, it becomes a digital signal.
Will anybody explain me what actually it means?