Eduqas GCSE Electronics combinational logic overview quiz quiz

When at least one input is 1

Only when both inputs are 1

Only when the inputs differ

Only when both inputs are 0

$0,0$

$0,1$

$1,0$

$1,1$

OR

NOR

XOR

AND

3

6

8

9

$\overline{A} + \overline{B}$

$\overline{A} \cdot \overline{B}$

$A \cdot B$

$A + B$

$A$

$B$

$A \cdot B$

$A + B$

It makes the truth table longer

It uses fewer gates, so the circuit is cheaper, faster and lower-power

It changes the circuit's function

It removes the need for a power supply

It is the fastest gate

Any logic function can be built from NAND gates only

It needs no power supply

It has only one input

Connect a wire across it

Tie both NAND inputs together

Add a resistor to the output

Use two NAND gates in series

AND

OR

XOR

NOR

Sum 1, carry 0

Sum 0, carry 1

Sum 1, carry 1

Sum 0, carry 0

9

11

13

7