Quiz submission record for quiz5-1-1 at Mon Jul 19 10:45:25 2004: Your Answer for Question 1: The benefits are that we can make faster machine if we make the common case fast and keep things simple. Your Answer for Question 2: It signals when we want to record the input in a circuit. I think it is something similar to the clock. Your Answer for Question 3: The add is used to goto a new program counter. I don't think that the ALU could also handle this task because it is deciding whether to replace the PC based on the data it is reading. Your unique submission ID is quiz5-1-1-cs61c-cd-1090259125-396.