Pull resistors

Question

What is a pull up/pull down resistor? Where is it used, why?

Answer 1

Linux, you need indicating the programming language that is relevant to this question in order to answer it correctly.

Answer 2

Hi! I'm sorry that your Google search bar is broken and not working properly.

Pull-up and pull-down resistors are components added to circuits to ensure that pins on a microcontroller have a known voltage level, usually either VCC (5V or 3V) or GND (0V), before they are actively driven by other components. Pull-ups pull the voltage level up to VCC when the pin is not active, while pull-downs pull the voltage down to 0V.

https://www.electronics-tutorials.ws/logic/pull-up-resistor.html

Answer 3

Steve Morin please read/review the Sololearn guidelines about posting content. Commenting off-topic or with unrelated links may be considered as spam activity.
https://www.sololearn.com/Discuss/3021159/?ref=app

Answer 4

Pull up/down resistors will ensure that during booting of a microcontroller, the voltage on the gpio pins are a fixed 1 or 0 and not a floating value.

You will understand the significance of pull up/down resistor only when you try to create your own development board. Youwill realize that when the uC is turned on, the gpio pins will fluctuate and wont have any fixed, stable reading.

Answer 5

Hi! Sorry, I just wanted to ask! I was unaware that seeking help and asking to find out about others' explanations is something bad! Yes, I did in fact google it and found out ages ago, but I just wanted to clarify in real time with someone who knows it! Y'all need to chill out lol