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40 TOP LOGIC GATES Online Test – Questions and Answers

1. What input values will cause an AND logic gate to produce a HIGH output?

All inputs are HIGH

At least one input is LOW

At least one input is HIGH

All inputs are LOW

2. The basic logic gate whose output is the complement of the input is the

AND gate

INVERTER gate

OR gate

comparator

3. Exclusive-OR (XOR) logic gates can be constructed from what other logic gates?

AND gates and NOT gates

OR gates and NOT gates

AND gates, OR gates, and NOT gates

OR gates only

4. A NAND gate has

LOW inputs and a LOW output

HIGH inputs and a HIGH output

LOW inputs and a HIGH output

None of the these

5. How many NAND circuits are contained in a 7400 NAND IC?

6. The logic gate that will have HIGH or “1” at its output when any one of its inputs is HIGH is a(n)

NOT gate

NOR gate

AND gate

OR gate

7. How many truth table entries are necessary for a four-input circuit?

8. If a signal passing through a gate is inhibited by sending a low into one of the inputs, and the output is HIGH, the gate is a(n):

NAND

NOR

AND

9. A single transistor can be used to build which of the following digital logic gates?

OR gates

AND gates

NOT gates

NAND gates

10. The output will be a LOW for any case when one or more inputs are zero in a(n):

NOT gate

AND gate

OR gate

NAND gate

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