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‫Welcome to the when your feedback shift register demonstration with the Ardie board I have the linear

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‫feedback shift register code programmed on the already board and for this program we are implementing

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‫a Fibonacci sequence of a 16 bit linear feedback shift register and this the shift register.

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‫Since we've designed it correctly it should have sixty five thousand five hundred and thirty five different

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‫variable numbers that it will produce before we have a repeating pattern.

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‫And so right now we are at the very first state or our seed value which is the value of 0 0 1.

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‫If I press the button zero on the development board it should give me the next bout the next pattern

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‫in our linear feedback shift register.

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‫So I'll press the button one.

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‫And you notice we now have a value of eight thousand if I press again.

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‫It will give me the next value in this sequence four thousand two thousand one thousand.

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‫And if I keep pressing this it will keep generating these random numbers and I can just keep pressing

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‫as fast as I want and I'll just keep generating all kinds of random numbers.

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‫And these are displayed in hex.

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‫So if you go through if I press this button sixty five thousand five hundred and thirty five times I

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‫will eventually come back to 0 0 1.

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‫So you did it manually would take a really long time.

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‫But if you set up a clock where instead of a push button input you had a clock input.

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‫You can see after a certain amount of time you will repeat it just will take a little bit of time.

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‫At any point we can go ahead and reset by toggling our slide switch 0 to 1.

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‫And now we're in the reset state.

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‫So if I push the button it won't increment it'll still stay at the 0 0 1.

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‫This is what we call our seed value.

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‫So in a computer or on your laptop or any other type of digital device if you want to generate a random

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‫number usually they'll have a function they call seed where you have to put an initial see value in

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‫there.

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‫But then after that every time you call that function it's going to give you a seemingly random number.

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‫So if I pull it back out a reset I can hit my start button again and go ahead.

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‫You'll notice it's the same sequence.

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‫So once we start with the seed value we can dictate what our next value will be.

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‫But if we keep pressing a certain number of times it appears to be random.

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‫So that is the demonstration of a linear feedback shift register running on the board.