Hello
I am attempting to simulate the circuit attached below in Multisim 11. Basically, I am trying to make an 8 bit up/down counter from two 4 bit 74191 up/down counter devies. I have connected the first counter so that it counts up to 15 then halts at 15. The second counter is connected to the first so that when the first counter reaches 15, the second counter begins its count.
When simulating the circuit, the first counter seems to work fine- counts up to fifteen and halts there. However, I am never given an opportunity to see if the second counter starts counting as the simulation seems to slow to a crawl or stop at that point, and I dont know why this is happening.
Could someone please take a look at my circuit, or suggest a reason why this is happening?
I am attempting to simulate the circuit attached below in Multisim 11. Basically, I am trying to make an 8 bit up/down counter from two 4 bit 74191 up/down counter devies. I have connected the first counter so that it counts up to 15 then halts at 15. The second counter is connected to the first so that when the first counter reaches 15, the second counter begins its count.
When simulating the circuit, the first counter seems to work fine- counts up to fifteen and halts there. However, I am never given an opportunity to see if the second counter starts counting as the simulation seems to slow to a crawl or stop at that point, and I dont know why this is happening.
Could someone please take a look at my circuit, or suggest a reason why this is happening?
Attachments
-
94.3 KB Views: 42