Logic Gates GCSE Advanced

How many inputs of an AND gate need to be 1 to output 1?

• 3
• 1
• 2
• none

How many inputs of an OR gate must be 1 to output 1?

• 3
• 1
• 2
• none

NOT(A OR B) = Q, if A=0 and B=0, what does Q equal?

• 1
• 0

(NOT A) AND B = Q, If A=0 and B = 1, what does Q equal?

• 1
• 0

A AND B = Q, If A=1 and B=1 what does Q equal?

• 1
• 0

AND Gate:
IF A and B are ON, the output would be...

• ON

• OFF

AND  Gate:
If A is OFF but B is ON, the output would be...

• ON

• OFF

A AND B = Q, If A=1 and B=1 what does Q equal?

• 1
• 0

An OR gate has......

• Two inputs and one input
• One input and one output
• One input and two outputs
• Two inputs and two outputs

A NOT gate has......

• Two inputs and one input
• One input and one output
• One input and two outputs
• Two inputs and two outputs