Yes. Digital signals have amplitude, as you do need to quantitatively specify the range of amplitudes that a signal must have to be considered in one state or the other. However, the actual amplitude is generally meaningless, so long as it is within the prescribed limits.
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THE TERM CONTINUOUS SIGNAL AND DISCRETE SIGNAL CLASSIFY THE SIGNALS ALONG THE TIME (i.e. horizontal axis) where as THE TERM ANALOG AND DIGITAL SIGNAL CLASSIFY THE SIGNAL ALONG THE AMPLITUDE (i.e vertical axis) we often confuse our-self with continuous time and analog signals. An analog signal is a signal which can take any amplitude in continuous range that is signal amplitude can take infinite values on the other hand a digital signal is one whose amplitude can take only finite numbers of values
it is an DAC (Digital to analogue converter
digital
Digital signals get corrupted by the noise, or overloa of information Overload of information, static in the air, etc
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