If you check out any digital electronic circuit, you’ll mostly find pull-up and pull-down resistors in them. They are used to correctly bias the inputs of digital gates to stop them from floating around randomly when there is no input condition. For any microcontroller in an embedded system such as Arduino, pull-up and pull-down resistors […]
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Credit- Circuit Basics. Published by Department of EEE, ADBU: tinyurl.com/eee-adbu