Logic expressions

Which logic gate does the following expression represent?

Q = A OR B

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Which logic gate does the following expression represent?

Q = NOT A

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Which logic gate does the following expression represent?

Q = A XOR B

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Which expression represents this logic circuit?

• D = A OR B (NOT A)

• D = NOT A AND B

• D = NOT (A OR B)

• D = NOT A (OR B)

Which expression represents this logic circuit?

• J = (NOT A) AND (NOT B)

• J = NOT (A AND B)

• J = A NOT B

• = A AND B (NOT J)

Which expression represents this logic circuit?

• I = (A AND B) NOT C

• I = (A OR B) NOT C

• I = (A AND B) OR (NOT C)

• I = (A OR B) AND (NOT C)

Which expression represents this logic circuit?

• Z = (B XOR C) NOT A

• Z = (NOT A) XOR (B AND C)

• Z = NOT A (XOR (B AND C))

• Q = (NOT A) XOR (B AND C)

What value is output from the following expression with the following inputs A=1, B=0:

D = NOT (A OR B)

• A

• D

• 1

• 0

What value is output from the following expression with the following inputs A=0, B=0:

D = NOT (A OR B)

• A

• D

• 1

• 0

What value is output from the following expression with the following inputs A=0, B=0, C=0:

Q = (A OR B) AND (NOT C)

• A

• Q

• 1

• 0