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                      Follow these articles for reference :
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                          <li><a href="https://binaryupdates.com/led-and-switch-with-arduino-uno/">for interfacing of Pushbutton with Arduino</a></li>
                          <li><a href="https://www.javatpoint.com/arduino-potentiometer">for interfacing of Potentiometer with Arduino</a></li>
                          <li><a href="https://create.arduino.cc/projecthub/ejshea/interface-a-photoresistor-ffb1b2">for interfacing Photoresistor with Arduino</a></li>
                          <li><a href="https://www.instructables.com/Slide-Switch-With-Arduino-Uno-R3/">for interfacing Slider switch with Arduino</a></li>
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