4. Answer the following questions: a. What is the largest positive number one can represent in a 12-bit 2's complement code? Write your result in binary and decimal. b. What is the greatest magnitude negative number one can represent in a 12-bit 2's complement code? Write your result in binary and decimal. c. What is the largest positive number one can represent in n-bit 2's complement code? d. What is the greatest magnitude negative number one can represent in n-bit 2's complement code? 5. Using 7 bits to represent each number, write the representations of 23 and -23 in signed magnitude, l's complement and 2's complement integers. Signed Magnitude 1's Complement 2's Complement 23 -23