Basic NOT gate and its application in fuel level indicator
Move the slider upwards. This condition simulates that the fuel level is sufficient.
Observe the LED output.
Move the slider downwards, below the minimum/reserve marking.
Observe the output LED. Check whether the drop in fuel level is indicated by the glowing of the RED LED.
Build and verify the same circuit using simulator.
Note: Use digital switch in place of slider and RED LED at the output.