Digital Electronics-Digital Arithmetic Operations and Circuits

Digital Electronics-Digital Arithmetic Operations and Circuits
61. The inputs of a full adder are labeled A1, B1, and Cin.
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62. Larger number capacities may be obtained from 2-bit adders by paralleling them.
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63. If [A] = 10 and [B] = 01, then [A] + [B] = [ ].
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64. 111010002 is the 2's-complement representation of –24.
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65. The look-ahead-carry adder is slower than the ripple-carry adder because it requires additional logic circuits.
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66. The solution to the binary problem 1011 × 0110 is 01100110.
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67. The solution to the BCD problem 0101 + 0100 is 00001001BCD.
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68. A macrofunction is a self-contained description of a logic circuit with all of its inputs, outputs, and operational characteristics defined.
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69. A half-adder circuit would normally be used each time a carry input is required in an adder circuit.
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70. The binary subtraction 0 – 1 = is
difference = 1
borrow = 0
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Digital Electronics
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