Electronics-Arithmetic Operations and Circuits
Electronics-Arithmetic Operations and Circuits
2. What are the two types of basic adder circuits?
- half adder and full adder
- half adder and parallel adder
- asynchronous and synchronous
- one's complement and two's complement
3. Adding the two's complement of –11 + (–2) will yield which two's complement answer?
- 1110 1101
- 1111 1001
- 1111 0011
- 1110 1001
4. 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.
- –14 and –13; –27
- –113 and –114; 227
- –27 and –13; 40
- –11 and –16; –27
5. The fast carry or look-ahead carry circuits found in most 4-bit parallel-adder circuits:
- increase ripple delay
- add a 1 to complemented inputs
- reduce propagation delay
- determine sign and magnitude
8. 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.
- –14 and –13; –27
- –113 and –114; 227
- –27 and –13; 40
- –11 and –16; –27
9. The selector inputs to an arithmetic-logic unit (ALU) determine the:
- selection of the IC
- arithmetic or logic function
- data word selection
- clock frequency to be used
10. Adding in binary, the decimal values 26 + 27 will produce a sum of:
- 111010
- 110110
- 110101
- 101011