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I am not an electrical engineer and I don't know much about electronic circuits. Since logic gate concept also can be used in pneumatics, which I have some knowledge, concept was easy to understand. I always wondered why someone is not putting a flash animation so that students can experiment with it and learn by trial and error. Since I could not find one, I decided to do it myself. I hope that this will create some interest and more and more people will do similar animations, so that next generation will benefit from this online tools.

I will not mention about what is logic gates and what is the truth tables, since there are a lot of information in the Internet about this. Here I will show all the logic gates with their truth tables under it. At the right of each logic gate there are black switches in closed position, When you click on them, it will changes its state from off to on, or on to off. The gate will respond this action by changing connecting cable to red, meaning there is power in the line, and will turn on or of the lamp at the left according the logic of given gate.

NAND gates are one of the two basic logic gates (along with NOR gates) from which any other logic gates can be built. Due to this property, NAND and NOR gates are sometimes called "universal gates". and their truth diagrams.

I hope it will be useful for all of us.

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