digital-electronics-digital-arithmetic-operations-and-circuits Related Question Answers
78. The look-ahead-carry adder is slower than the ripple-carry adder because it requires additional logic circuits.
81. A macrofunction is a self-contained description of a logic circuit with all of its inputs, outputs, and operational characteristics defined.
82. A half-adder circuit would normally be used each time a carry input is required in an adder circuit.
84. A sign bit of "1" in the difference of a 2's-complement subtraction problem indicates the magnitude is negative and in true binary form.
88. It is not necessary to have the same number of bits when adding or subtracting signed binary numbers in the 2's-complement system.
90. The representation of –110 in eight-bit two's-complement notation is 11110111.
92. When the 2's-complement system is used, the number to be subtracted is changed to its 2's complement and then added to the minuend.
93. Full adders can add two numbers and need not have a carry input or a carry output.
94. The VHDL compiler requires libraries to be specified at the beginning of the code if components from those libraries are being used.
95. The carry-out of a binary adder is identified using the summation symbol, sigma.
97. The two's-complement method is used in computer systems that perform arithmetic.
98. Digital computers use an easier method to subtract binary numbers, called one's complement.
99. Binary multiplication is like decimal multiplication except you deal only with 1s and 0s.
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