Your friend who works for Photons 'R Us wants help with a circuit to drive the newLED his company has developed. He wants to turn on the LED based on a digital signalwhich swings between VDD and OV. Unfortunately the LED when it is on drops a voltageVD across of it and requires a current of IL to flow through it to produce light. You askyour 10A Professor for help and he shows you two circuits shown in figure 5, of course inhis usual absent-minded self does not tell you how each one works, he only crypticallysays one inverts and the other does not.V₁V DDR₁(a) Configuration AVoVDDFigure 5: LED DriverRL(b) Configuration B(a) Based on your 10A knowledge which circuit will turn the LED on whenthe digital signal is logic 1 ? Explain your answer clearly

The circuit that turns ON the LED needs to be identified from the given two circuits and one of the circuits will act as an inverter and another one will turn ON the LED.Configuration A:Configuration circuit A acts as an inverter logic. When the input is digital logic 1 and it is similar to + 5 V. So, the transistor will be in a conduction state and the transistor will act similarly to the closed switch. The voltage at Vo will be 0V.Now both the ends of the LED will be at 0V so the LED will not glow.Configuration B:Configuration circuit B acts as an LED controller circuit. When the input is digital logic 1 and it is similar to +5V. So, the transistor will be in a conduction state and the transistor will act similarly to the closed switch. Now one end of the LED is at a higher potential and the other end is at a lower potential and the LED will glow.Configuration A:Configuration circuit A acts as an inverter logic. Configuration B:Configuration circuit B acts as an LED controller circuit.