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Hi, Your JK is level controlled flip-flop which usually make it really hard to get in sync. If you want to simulate the actual schematics of 4000 series and you are sure it uses such flip-flops, than we probably need to figure out their design. If you care about logical side only then there is a JK ...

There are no delays per se, but gates get evaluated in same way as real signal will be spread. That means that if you need to have your signal delayed you can add two inverters and they do the trick. However this technic is not reliable both in the program itself as well as in the real life circuit....

Thank you for your suggestions. Labels on the body of circuit’s symbol is really good idea and it will definitely deserve some time spent implementing this feature. So you can expect it in one of the next versions. Meanwhile there is a tool tips shown when you hover your mouse over the input/output ...

Hi Soc, You don’t have flip-flops on the palette because there are only either primitive gates there or circuits you’ve created. So just create a new circuit call it D flip-flop and it will be on your palette. You can reuse any circuit from other project as well, just open this project in another in...

Hi Boz,
New release of the program is available. It addresses some of the issues you’ve pointed out. Please feel free to download http://www.logiccircuit.org/download.html and try.
Eugene

Hi David, In short you can create as many logic circuits as you want and use them on other circuits. There is a menu Circuit in the program for this purpose. You can read help topic about this on this web site: http://www.logiccircuit.org/advanced.html Other topics are described here: http://www.log...

Hi Boz, Thank you for suggestions. You do not need to turn off the simulation to change constant, just double click it and it will be incremented by modulo (2 power of it bit width). So for one bit constant just flipping from 0 to 1 and back to 0 again. There is a way to share you circuit between di...

Hi there, Thanks for providing your feedback. Many issues are fixed now and you can download new version and check if it works better for you. So wires are sticky to pins now and you need to press Shift to move circuits without them. Drawing wires are much easier now. New property “Category” added t...

Hi, Thank you for using LogicCircuit and sharing your ideas. * The objects/wires snap in on the raster only from the lower-right. It would be much more faster if they would align to the grid from "all sides" around the point which I was targeting. This is already fixed in the latest versio...

If you have some state holding circuits in your circuit project like flip-flops you’ve probably noticed that when you turn power on they all flipped to some random state. Of course such flip-flops usually have a reset input and you want to send a reset signal to that input after the power gets on. B...