problem 1: Define a signal and give an ex to illustrate?

problem 2: Describe the three characteristics of a sine wave?

problem 3: What is the spectrum of a signal?

problem 4: What is the difference between information and a signal?

problem 5: What do you mean by an analog and a digital signal?

problem 6: What is the difference between an analog and digital signal?

problem 7: Give two illustrations of each, an analog and the digital signal.

problem 8: Contrast a periodic signal and the aperiodic signal.

problem 9: What is the difference between a digital data and analog data?

problem 10: What is the relationship between period and frequency?