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Arithmetic Operations and Circuits problems

1. Use the two's complement system to add the signed numbers 11110010 and 11110011. Determine, in decimal, the sign and value of each number and their sum.
Options
A. ?14 and ?13; ?27
B. ?113 and ?114; 227
C. ?27 and ?13; 40
D. ?11 and ?16; ?27

3. The fast carry or look-ahead carry circuits found in most 4-bit parallel-adder circuits:
Options
A. increase ripple delay
B. add a 1 to complemented inputs
C. reduce propagation delay
D. determine sign and magnitude

5. The two's complement system is to be used to add the signed numbers 11110010 and 11110011. Determine, in decimal, the sign and value of each number and their sum.
Options
A. ?14 and ?13; ?27
B. ?113 and ?114; 227
C. ?27 and ?13; 40
D. ?11 and ?16; ?27

7. The selector inputs to an arithmetic-logic unit (ALU) determine the:
Options
A. selection of the IC
B. arithmetic or logic function
C. data word selection
D. clock frequency to be used

9. What are the two types of basic adder circuits?
Options
A. half adder and full adder
B. half adder and parallel adder
C. asynchronous and synchronous
D. one's complement and two's complement

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