HELP..Designing a BCD Down counter

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rbreak7

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I need to design a sync. 4 bit BCD down counter using D Flip Flops ans SSI gates. It must contain and enable, load and Chip enable Out. I need this ASAP. Please help. Thanks.

Russ
 
Somebody has to have some idea....please

Somebody has to have some idea....please help..Im running out of time
 
I need to design a sync. 4 bit BCD down counter using D Flip Flops ans SSI gates. It must contain and enable, load and Chip enable Out.

If you need to design this, why are you asking us?

(On a side note, I'm looking at National's 1984 Logic Databook, at an 'HC190. They show how they designed theirs using D flip-flops.)
 
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