Your simulation schematic does not work because you are using components that are not from the Spice Symbol library. Please read the Simulation Tutorial, (3) in Welcome to EasyEDA, (2) in: [https://easyeda.com/forum/topic/How-to-ask-for-help-and-get-an-answer-71b17a40d15442349eaecbfae083e46a](https://easyeda.com/forum/topic/How-to-ask-for-help-and-get-an-answer-71b17a40d15442349eaecbfae083e46a)<br> <br>

@andyfierman i have looked and tried many parts but still i get the same error.

 This is the latest error i get. i managed to update the library thanks to @andyfierman. i also made it public so others can help with it. Any suggestions are greatly appreciated.

Sorry but your sim fails because you have not understood the information and guidance in the Spuce Tutorial. You are still using symbols that are not from the Spice Symbol library and therefore do not have spice models associated with them.

A few examples...    None of the LEDs are from the Spice Library. **Notes about your circuit: ** 1) The MMTL431 shunt reference diode has no connection to a positive supply. Please see the applications notes in the datasheet: [https://www.ti.com/lit/ds/symlink/tl431.pdf](https://www.ti.com/lit/ds/symlink/tl431.pdf)<br> <br> 2) The MC100EP51DR2G device is a member of the 100k ECL (Emitter Coupled Logic) family and as such is poorly suited for the circuit you are trying to design. It is also inappropriately connected in your particular circuit. You would be better using something like a 4013 or 74HC74 dual D-type flip-flop. For more information about ECL you might like to read the datasheet for this particular device: [https://www.onsemi.com/pdf/datasheet/mc10ep51-d.pdf](https://www.onsemi.com/pdf/datasheet/mc10ep51-d.pdf)<br> <br> and the MECL handbook for more general information: [https://www.tiffe.de/robotron/Bausteinuebersicht/MECL/HB205-D.pdf](https://www.tiffe.de/robotron/Bausteinuebersicht/MECL/HB205-D.pdf)<br> <br> See also: [https://www.onsemi.com/download/application-notes/pdf/an1406-d.pdf](https://www.onsemi.com/download/application-notes/pdf/an1406-d.pdf)<br> <br> 3) Please study: [https://easyeda.com/forum/topic/UPDATED-Power-supply-decoupling-and-why-it-matters-30a39d0a77f34d5d8dc77e37c035b3d3](https://easyeda.com/forum/topic/UPDATED-Power-supply-decoupling-and-why-it-matters-30a39d0a77f34d5d8dc77e37c035b3d3)<br> <br>

@andyfierman thank you so much. i will try you suggestions.