| 1. | Which one of the following is the dual-form of the Boolean identity AB+ A’C = (A + C) (A’ + B) ? | |
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AB+ A’C=AC + A’B
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(A+B) + (A’ + C) = (A + C) (A’ + B)
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(A + B) (A+C) = AC + AB
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AB+ A’C=AB+ A’C + BC
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Report Question| 2. | The expression (X+Y) (X+Y’)(X’ + Y) is equivalent to ? | |
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X’Y’
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X’Y
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XY’
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XY
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| 3. | The Boolean expression ABCD + AB’CD + ABCD’ +AB’CD’ is equivalent to ? | |
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A
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AC
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ABC
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1
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| 4. | Assume that only x and y logic inputs are available, and their complements x’ and y’ are not available. What is the minimum number of 2-input NAND gates required to implement x x’ or y ? | |
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2
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3
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4
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5
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| 5. | Minimum number of two input NAND gates required to realize the logic function (AB’ + A’B) is ? | |
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5
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3
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6
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4
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| 6. | The Boolean function Y = AB + CD is to be realized using only 2-input NAND gates. The minimum number of gates required is ? | |
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2
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3
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4
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5
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| 7. | In NOR-NOR configuration, the minimum number of NOR gates needed to implement the switching function X+XY’ + XY’Z is ? | |
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5
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3
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2
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0
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| 8. | According to De-Morgan's second theorem ? | |
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A NAND gate is always complementary to an AND gate
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An AND gate is equivalent to a bubbled NAND gate
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A NAND gate is equivalent to a bubbled AND gate
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A NAND gate is equivalent to a bubbled OR gate
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| 9. | If x’ y’ = 0, then which one of the following is true ? | |
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x’y+y’x+xz = xy’ + yz
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x’y’z’ + xyz = xyz’ + x’y’z’
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x’y+y’x=xy + x’y’
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x’yx=1
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| 10. | The NAND-NAND realization is equivalent to ? | |
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AND-NOT realization
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AND-OR realization
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OR-AND realization
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NOT-OR realization
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