Building a 4 bit accumulator

[Davethe2]

Hi 

I am trying to design a 4 bit accumulator circuit. I am trying to use full adders and D_FF's yet I am not sure on the wiring for digital circuits. For example I just want to see the number on from the B pin not sure how to do this. 

Thanks very much 

[Miguel_V]

Hey,

I'm not entirely sure on what you are trying to accomplish (besides that you want to make an accumulator), but if you want to see information on any pin or circuit (during simulation) then you can use a probe tool. You can customize it to give you current, voltage, p-p etc. The tool is called a Measurement Probe and you can find it in the Instruments Toolbar.

Best of luck,

[Davethe2]

Thanks for the response; sorry it was my first time using digital electronics on multisim. I think I have managed to construct the circuit but not sure how to review the circuit in terms of how to see the count and how to see the circuit’s pulses graphically.

Thanks very much   

[Miguel_V]

Hi,

When you say graphically, do you want to use the logic analyzer (to see a graph in terms of time and input-high/low)? Here I have rearranged your circuit a bit to get an output from the analyzer. Just double click the analyzer to open the front panel and run the simulation (F5).

Cheers,

[Davethe2]

Hi 

Thanks very much for that. Just a few more questions I am bit puzzled on how to wire up a Display to circuit like a hex display to actually show the accumulator counting and with that in mind I have been trying to stop it from counting at 10 by using a and gate out of the final C out not to sure if it is working 

thanks again for all your help.