B1A Electro 2 Semi-Final Quiz No. 1

What can you point out about a three-input OR gate?

• The output will be logic 1 if there is at least a logic 1 at the input.

• The output will be logic 0 if there is at least a logic 1 at the input.

• The output will be logic 1 if and only if the inputs are all logic 1.

• The output will be logic 1 if and only if the inputs are all logic 0.

What can you point out about a three-input AND gate?

• The output will be logic 1 if there is at least a logic 1 at the input.

• The output will be logic 0 if there is at least a logic 1 at the input.

• The output will be logic 1 if and only if the inputs are all logic 1.

• The output will be logic 1 if and only if the inputs are all logic 0.

Referring to the figure shown, what would the output be at both AND gate if A = 1 and B = 0?

• 0

• -1

• 1

• 2

Referring to the figure shown, what would the output be at X if A = 1 and B = 0?

• 0

• -1

• 1

• 2

Referring to the figure shown, what would the output be at X if A = 0 and B = 1?

• 0

• -1

• 1

• 2

Referring to the figure shown, what would the output be at X if A = 1 and B = 1?

• 0

• -1

• 1

• 2

Referring to the figure shown, what would the output be at X if A = 0 and B = 0?

• 0

• -1

• 1

• 2

What function does the over bar sign ( ¯ ) do in logical expression?

• AND function

• XOR function

• NOT function

• OR function

What function does the dot sign (•) do in logical expression?

• AND

• XOR

• NOT

• OR

What function does the plus sign (+) do in logical expression?

• AND function

• XOR function

• NOT function

• OR function