12. A adder has three binary input. A half C. full B. 2-bit D. 32-bit 13. In a adder the output from each adder depends on the carry from the previous adder, there is an increasing delay from the least significant to the most significant bit. 4. half C. full B. carry look ahead D. ripple carry 14. Typically the same hardware is used to perform addition A. integer and floating point C. binary and floating point B. signed and unsigned D. single and double precision 15. What is the largest number that can be represented with 32 bit using twos complement representation? A. 232-1 C. 231-1 B. 231 D. 232