Questions set #1 Signal Concept [4 marks) 1. Give a brief definition of a signal 2. Give an example(s) of natural analog and digital signals (different information types exciting in the real world) 3. Discuss the major advantages of digital signals in respect of analog signals in computer and communication systems. 4. What are the signals used in Electrical and Electronics engineering? Questions set #2 Signals major types (4 marks 1. Examine carefully the signals given below. (2 pts.) Identify each of the signals shown in the exhibit below (Specify whether each signal is analog, discrete or digital, in case of digital state if signal is binary or multilevel) (a) (b) 1.07 (c) (d)