High quality PCB prototypes: https://www.pcbway.com 3D & CNC service: https://www.pcbway.com/rapid-prototyping/ ?Multiplexers and demultiplexers are devices that allow us to control a greater number of devices with a smaller number of inputs or outputs. We can use these devices to expand the number of inputs and outputs of a processor like Ardunio. ?LINKS ------------------------------------- Tutorial Website: https://electronoobs.com/eng_arduino_tut175.php Get my PCB: https://electronoobs.io/shop/index.php/product/two-hand-multimeter/ My tools: https://electronoobs.com/eng_afiliate.php False/True T-Shirt: https://teespring.com/it-s-funny-because-is-true?pid=389&cid=100029 ?SUPPORT ------------------------------------- Join my Arduino Course (Spanish): https://bit.ly/2JY8icE ELECTRONOOBS.io: https://electronoobs.io Donate on PayPal: https://www.paypal.com/donate?hosted_button_id=6DNT4Z4GAHQ5J Help my projects on Patreon : https://www.patreon.com/ELECTRONOOBS my Q&A page: https://electronoobs.io/forum/index.php Facebook page: https://www.facebook.com/Electronoobs Canal en Español: https://www.youtube.com/channel/UCL_QvUUeriC6q610RCXDlSQ 00:00 Intro 01:45 Why use a MUX? 04:50 How it works? 07:08 MUX as output 08:05 Bit Read Function 10:08 MUX as input 11:18 More Specs 12:58 Thank you Like share and subscribe to motivate me. Thank you #arduino #Modules #tutorial