What is Pull up Resistor and Pull Down Resistor ? How to select the pull-up resistor value ?

In this video, what is pull-up and pull-down resistor and how to select the value of pull-up resistor for specific application has been explained in detail (using the calculations).

The following topics are covered in the video:
0:00 What is Pull-up and Pull-down Resistor ?
5:20 Applications of Pull-up Resistor
8:57 How to select the pull-up resistor value for specific application ?

The link for the other useful videos:
1) What is Buffer and Tri-State Buffer ?
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2) Difference between Latch and Flip-Flop ?
   • Latch and Flip-Flop Explained | Diffe...  

What is Pull-up and Pull-down resistor ?

The pull-up resistor pulls up the voltage of the digital pin to logic HIGH and it prevents it from the floating condition (when the pin is interfaced with a switch).
The pull-up resistors are often used with the open collector gates and open collector ICs and they are important part of the I2C protocol.

The pull-down resistor works exactly opposite to the pull-up resistor. It pulls down the voltage of the digital pin to logic LOW and prevents it from the floating condition.

While using these pull-up and pull-down resistor in any circuit, the selection of the proper value of the resistor is also very important.
In this video, how to select the value of pull-up resistor for the specific application is explained using the calculations.

This video will be helpful to all the students of science and engineering in understanding the pull-up and pull-down resistors and how to select the pull-up resistor for the specific application.

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