Combinational Gates and Circuits

Which one of the following circuits is NOT equivalent to a 2-input XNOR (exclusive NOR) gate?

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What does an EXOR gate do?

• Give a high output when one or more of its inputs are high

• Give a high output when only one of its inputs are high

• Give a low output when one or more of its inputs are high

• Give a low output when only one of its inputs are high

Which of the following symbols represents a NOR gate?

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Which one of the following truth tables represents the behaviour a NAND gate?

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What does connecting together the inputs of NAND and NOR gates do?

• Help produce multi-input gates

• Produce and EXNOR gate

• Produce a NOT gate

• Damage the gate

How do you make a NAND gate out of an AND gate using inverters (NOT gates)?

• Invert the output from the AND gate

• Invert both the inputs to the AND gate

• Invert one of the inputs to the AND gate

• Invert both the inputs and output of the AND gate

What type of logic gate does this symbol represent?

• Exclusive OR

• Exclusive NOR

• OR

• NOR

How do you make a NOR gate out of an NAND gate using inverters (NOT gates)?

• Invert the output from the NAND gate

• Invert both the inputs to the NAND gate

• Invert one of the inputs to the NAND gate

• Invert both the inputs and output of the NAND gate

What type of logic gate's behaviour does this truth table represent?

• 2 input OR

• 3 input OR

• 3 input EXOR

• 4 input EXOR

What type of logic gate does this logic circuit configuration produce?

• NAND gate

• NOR gate

• EXOR gate

• EXNOR gate