Thursday, October 7, 2010

QUESTION 11

Why is a NAND gate used in a BCD ripple counter>??

10 comments:

  1. the nand gate is used to clear the flipflops to change it from 1001 to 0000

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  2. in bcd ripple counter from 9 it has to go to zero, to clear that thing we are using nand gate.

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  3. Both outputs QB and QD are now equal to logic "1" and the output from the NAND gate changes state from logic "1" to a logic "0" level and whose output is also connected to the CLEAR (CLR) inputs of all the J-K Flip-flops

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  4. for clearing the flipflop from 1 and 4 to get the counting from 0000 to 1001 and back to 0000 NAND gate is used

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  5. so that the clear signal can be fed for 1010 condn....

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  6. NAND gate gives the output as 0 if the inputs are 1. And this output is used to give the clear for each flip flop in the BCD ripple counter.And the counter starts counting from 0000.

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  7. It is basically used to give its output in the clear conditions for the flip-flops.

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  8. the nand gate is used to clear the flipflops to change it from 1001 to 0000

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  9. it is used to clear the flipflop and to change it from 1001 to 0000

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  10. its used to reset the flip flop when an output of 1010 occurs..

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