Oscilloscope circuitry - help needed

[cipi-cips]

Re: Oscilloscope

ok this is what I have created:

**broken link removed**


If you can notice it is the same logic for NAND and AND only that you get notQ at the output

Now I need to build offset can you tell me why didnt you put diode in series with resistors on Qa and Qb of the counter ?

One more thing if you can see for multiplexing it is used this QaQb, QaQb(not),Qa(not)Qb(not) and Qa(not)Qb for each NAND gate, now if you can se on the original schema (first schema that I've posted here) not only that pin 2 from counter is miswired it also wrong logic for forth NAND gate I think that pin 2 from IC7420 must connect to pin 9 of counter ?!

 

[cipi-cips]

Re: Oscilloscope

Is this possible to make in Multisim, I mean is it possible for oscilloscope to show 4 signals on 1 ch

 

[cipi-cips]

Re: Oscilloscope

Ok I have created a circuit and it works very very fine but this circuit shows only digital signal's


https://www.elektronika.ba/forum/download/file.php?id=731


Well now I am interested, how to show analogue signals, my idea is to change NAND gates with one analogue multiplexer, so what do you think will that work, and if it will work what kind of analogue multiplexer should I use ???

 

[cipi-cips]

Re: Oscilloscope

I have created this circuit, and it works fine

you can see four different signals on 1CH on oscilloscope,


**broken link removed**