Help with simultaneous outputs problem?
Hi people,
I got a silly problem here,
Here is a simplified circuit I created in multisim.
Look at the picture first.
**broken link removed**
First the 4-bit counters gets a clock signal of 0.25Hz.
When the 4-bit counters counts to 1110(15), the output o14 (demultiplexer) gets a pulse.
After 4 seconds, the 4-bit counters counts to 1111(16), and the output o15 (demultiplexer) gets another pulse.
The circuit operation is easy, first the output o14 triggers the D-flipflop once, then 4 seconds after the output o15 triggers the same D-flipflop.
Also binary value 1110(15) triggers once, and 1111(16) triggers once.
1110= output o14 and 1111=output o15
But here is where the problem begins.
Output o15 gets a "high" when o14 is about to go "low"(like there is no propagation delay time between them)
So o14 and o15 either short-circuit or they got counted as "one" pulse, instead of two.
In Multisim there are many ways to solve the problem.
But none worked in reality.
Any ideas folks?