How does nand gate work

The NAND gate provides the false or low output only when their outputs is high or true. The NAND gate is essential because different types of a boolean function are implemented by using it. The NAND gate has the property of functional completeness. The function completeness means any types of gates can be implemented by using the NAND gate. The logic circuit of the NAND gate is shown below:.

Turn on JavaScript to exercise your cookie preferences for all non-essential cookies. You can read FutureLearn's Cookie policy here. It is a great course for everyone that want to learn deep computation concepts. Every person that work with IT should did. You learn a lot in this course.

Even if you done some computing before. Really good for understanding the concept and help your students. It was interesting to learn about logic gates and other major components within a computer as well as the assembly language. Category: FutureLearn Local. Category: FutureLearn Local , Learning.

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Learn more about how FutureLearn is transforming access to education. Learn more about this course. View transcript. Here, we have a circuit set up containing two transistors. The two switches are acting as inputs to the transistor setup, and the LED represents the output. At the moment, when both inputs are in the off position, the LED is on. Either of the inputs can be turned on, leaving the other one off, and the LED will stay on. I am an electrical engineer and agree that it seems that the logic is broken but read on and you'll see how easy it is.

As it was answered before, electronic logic gates are named for its voltage behavior, but that's the easy part. Whenever both SW1 and SW2 are pressed i. We can translate it to using logic gate symbols. The voltage at Q i. Now comes the not complicated but rather confusing part.

Suppose you have the following circuit:. I'm sure you will say that's definitively an AND. But let's keep in mind the fact that the point Q voltage drops to 0 when both buttons are pressed and let's translate the circuit to using logic gates.

Now, you will see that the relay will turn on only when the point Q voltage drops to zero i. So, think it this way; if you were going to do your own physical implementation of this circuit with logic gates, you would have to buy a NAND. So don't worry, your computational logic is safe. I found very useful the simple description of a NAND gate to act thusly "any zero in causes a one out".

This circuit will do that. Sign up to join this community. The best answers are voted up and rise to the top. Stack Overflow for Teams — Collaborate and share knowledge with a private group.

Create a free Team What is Teams? Learn more. How does a NAND gate work? Very basic question Ask Question. Asked 2 years, 6 months ago. Active 2 years, 6 months ago. Viewed 2k times.