Logic Gates – Exercise – 3

131. The output of an exclusive-NOR gate is 1. Which input combination is correct?

(a) A = 1, B = 0
(b) A = 0, B = 1
(c) A = 0, B = 0
(d) none of the above

Answer
Answer : (c)
Explanation
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132. Implementing the expression AB + CDE using NAND logic, we get:

(a) (A)
(b) (B)
(c) (C)
(d) (D)

Answer
Answer : (a)
Explanation
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133. Referring to the GAL diagram, which is the correct logic function?

(a)
(b)
(c)
(d)

Answer
Answer : (a)
Explanation
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134. A 4-variable AND-OR-Invert circuit produces a 0 at its Y output. Which combination of inputs is correct?

(a)
(b)
(c)
(d) none of the above

Answer
Answer : (c)
Explanation
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135. A 4-variable AND-OR circuit produces a 0 at its Y output. Which combination of inputs is correct?

(a) A = 0, B = 0, C = 1, D = 1
(b) A = 1, B = 1, C = 0, D = 0
(c) A = 1, B = 1, C = 1, D = 1
(d) A = 1, B = 0, C = 1, D = 0

Answer
Answer : (d)
Explanation
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