Marks 1
A bulb in staircase has two switches, one switch being at the ground floor and the other one at the first floor. The bulb can be turned $$ON$$ and als...
The complete set of only those Logic Gates designated as Universal gates is
The digital circuit using two inverters shown in figure will act as
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The output of a logic gate is $$''1''$$ when all its inputs are at logic $$''0''.$$ The gate is either
The Boolean expression for the output of the logic circuit shown in figure is
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Marks 2
$$A,B,C$$ and $$D$$ are input bits, and $$Y$$ is the output bit in the $$XOR$$ gate circuit of the figure below. Which of the following statements abo...
In the figure, as long as $${X_1} = 1$$ and $${X_2} = 1,$$ the output $$Q$$ remains
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A digital circuit which compares two numbers $${A_3}{A_2}{A_1}{A_0},\,\,{B_3}{B_2}{B_1}{B_0}$$ is shown in Fig. To get output $$Y=0,$$ choose one pair...
For the circuit shown in Fig. the Boolean expression for the output $$Y$$ in terms of inputs $$P,$$ $$Q,$$ $$R$$ and $$S$$ is
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For a flip-flop formed from two $$NAND$$ gates as shown in figure. The unusable state corresponds to
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The logic function $$f = \overline {\left( {x.\overline y } \right) + \left( {\overline x .y} \right)} $$ is the same as