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Chapter 5.3 - Interfacing LM324 Comparator IC with LDR(Light Depended Resistor) Sensor on Bread Board - Circuit Diagram

Interfacing LM324 Comparator IC with LDR(Light Depended Resistor) Sensor on Bread Board - Circuit Diagram

As you can see from the above circuit diagram, you have to remove all the LED and switches from your breadboard, and leave only one LED which would be connected to Pin No. 1 or Port 1.0 of 8051 Microcontroller. The rest of the circuit will be the same. Now in the above circuit diagram you can also see that there is and LED and LDR connected with the comparator IC. We know that the the above figure doesn't even looks like LM324 comparator IC, but don't panic, its just demonstration of how the comparator IC will be connected. In the Practical Tutorial Sub Chapter you will be guided with the step by step procedure to make connections of LM324 Comparator IC with LDR(Light Depended Resistor) Sensor on Bread Board. And here is the pinout of LM324 IC. Make sure you have this tab opened while doing practical tutorial.

Pinout of LM324 IC


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