Quiz submission record for quiz5-1-1 at Mon Jul 19 10:42:13 2004: Your Answer for Question 1: When the insutruction set is regular and simple, hardware design and optimization becomes easier because you don't have t build extra unneccessary circuits, or do multiple unneeded operations. Your Answer for Question 2: It signals that the value of a register has been changed and should be written to memory. Your Answer for Question 3: The add unit is included so that the ALU does not have to compute simple operations such as addition and negation. Your unique submission ID is quiz5-1-1-cs61c-ef-1090258933-470.