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?
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?
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