What is difference between ask and am?
The most fundamental difference, I would say, is that Amplitude
Modulation (AM) is a kind of Analog Modulation Technique (the
modulation is applied continuously in response to the analog
information signal) where Amplitude Shift Keying is a type of
Digital Modulation Technique ( an analog carrier signal is
modulated by a discrete signal, digital modulation methods can be
considered as digital-to-analog conversion, and the corresponding
demodulation or detection as analog-to-digital conversion. The
changes in the carrier signal are chosen from a finite number of M
alternative symbols).