| 1. | Which one of the following statements is correct For a 4-input NOR gate, when only two inputs are to be used, the best option for the used inputs is to ? | |
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connect them to ground
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connect them to Vcc
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keep them open
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connect them to the used inputs
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Report Question| 2. | The minimum number of NAND gates required to implement A+ AB’+ AB’C is equal to ? | |
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zero
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1
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4
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7
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| 3. | The term "hex inverter" refers to ? | |
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an inverter that has six inputs
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six inverters in a single package
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a six-input symbolic logic device
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an inverter that has a history of failure
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| 4. | An OR gate can be imagined as ? | |
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switches connected in series
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switches connected in parallel
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transistors connected in series
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transistors connected in parallel
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| 5. | An AND gate can be imagined as ? | |
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switches connected in series
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switches connected in parallel
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transistors connected in series
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transistors connected in parallel
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| 6. | Which of the following gates is known as anticoincidence detector ? | |
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OR gate
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X-OR gate
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AND gate
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X-NOR gate
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| 7. | Which of the following is known as a mod-2 adder ? | |
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X-OR gate
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X-NOR gate
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NAND gate
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NOR gate
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| 8. | What are the minimum numbers of NOT gates and 2-input OR gates required to design the logic of the driver for this 7-segment display ? | |
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3 NOT and 4 OR
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2 NOT and 4 OR
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1 NOT and 3 OR
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2 NOT and 3 OR
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| 9. | Sum of product representation of Boolean equations can be easily realized by the following digital circuits ? | |
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NAND-NAND
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AND-AND
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OR-OR
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NOR-NOR
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| 10. | Karnaugh map is used to ? | |
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minimise the number of flip-flops in a digital circuit
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minimise the number of gates only in a digital circuit
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minimise the number of gates and fan-in of a digital circuit
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design gates
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