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‫Welcome to the barrow shift or demonstration with the already board I have the seven segments boy and

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‫two slides which is set up on the breadboard.

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‫The 7st display I have all the different segments type through the 56 ohm resistor back into the J port

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‫p mod of the arty board and the four digit selects are coming into the GBP mod of the aready board and

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‫then the two slides switches.

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‫I have coming fed into the JCP model port.

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‫Now once I load the the barrel shifter design onto the already board the 7st and display will show all

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‫four zeroes.

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‫And so what we want to do is by modifying the two flights which is on the breadboard which is R which

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‫control what the barrel shifter does if there 0 0 we're going to hold it to 0 1.

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‫Want to shift right.

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‫If it's a 1 0 we want to shift left and if they're both ones we want to load a value in the value we're

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‫going to load in is a preconfigured value that's set inside of the barrel shifter design.

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‫So if we set both of the side switches to one which we just slide them both forward to the right and

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‫push the button zero.

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‫This will load the preconfigured value of 128 into our shift register.

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‫So we push that we'll now see 128 shown on the 7 segment display.

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‫So we want to do is do a divide operation.

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‫So if we do a divide by two we'll see a value of 64 in order to do that.

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‫We to set we shift by one bit to the left.

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‫So in order to do a arcsin and one bit to the right.

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‫So in order to do a right shift we want to have a value of 0 and then 1 on our slide switch and on our

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‫shift switches which we have on the board we want to have a value of.

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‫We wanted to put the least in the begin bit or the s w zero up to 1.

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‫So this is going to shift the bits in our register the 128 one bit to the right which will effectively

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‫be a divide by two.

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‫So when I press this button 0 we should see a value of 64 on a 7 segment display.

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‫Now I pressed it twice.

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‫So you'll see what 64 and divide by 2 again.

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‫Give us 32.

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‫If I press it once more that will divide by two.

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‫Once again and take it down to 16.

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‫Now conversely we can go the opposite way.

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‫If we do a shift left we will be actually multiplying.

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‫So in order to do a shift left we want to have a 1 0.

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‫So I got to switch my switches make it a 1 and then a zero.

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‫So now I'm going to be multiplying by two because I'm doing a shift left.

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‫So when I press the button I should take that 16 value and multiply it by two.

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‫So I press the button you'll see me multiply that by two and get a value of 32.

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‫I press the button once again or you get a value of 64 and now I keep pressing for press again I'll

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‫get a value 128.

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‫I just keep multiplying by 2.

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‫Now what I can do at any point in time is go ahead and reload the value.

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‫So if I make both of my slide switches at one that's the load configuration if I press my button zero

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‫that gets my register back to the 128 value.

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‫And so I can keep by selecting different division shift left or shift right.

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‫We can perform very fast multiplication and division.

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‫As always it's Empower them too.

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‫So by changing our values to determine whether we're shifting left right and by changing the amount

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‫we shift with a slide switches on the Ardie board down here we can determine how many what are multiplication

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‫or division is by if it's 2 4 8 16.

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‫So on and so forth.

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‫And so the big thing with the bear shifter is it becomes a very efficient way to perform multiplication

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‫and division.

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‫Whenever you're doing something in a multiple of two.

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‫And that is how the barrel shifter should be running on your already board.