(A) For instance, if we measure the room temperature continuously and plot it graph with time on X-axis and temperature on the Y-axis, we get a continuous waveform, which is an analog signal. Analog is always continuous.
(B) The absence or presence of something can be used to plot a digital signal.
(C ) An analog signal is a continuously varying signal, similar to a sinusoidal waveform.
(D) Any signal can be classified into one of the two types: analog and digital. (E) In contrast, a digital signal takes the form of pulses, where we have something or nothing.
Which of the following should be the FIRST sentence after rearrangement?
A. A
B. B
C. C
D. D
