There are several errors in your simulation schematic. Please ensure that you have read the simulation Tutorial, (3) in (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) Then see these projects: [https://oshwlab.com/andyfierman/how-to-use-logic-gates-and-devices-in-easyeda-part-1](https://oshwlab.com/andyfierman/how-to-use-logic-gates-and-devices-in-easyeda-part-1) [https://oshwlab.com/andyfierman/how-to-use-logic-gates-and-devices-in-easyeda-part-2](https://oshwlab.com/andyfierman/how-to-use-logic-gates-and-devices-in-easyeda-part-2) [https://oshwlab\.com/andyfierman/How\_to\_use\_EasyEDA\_Schmitt\_Trigger\_input\_logic\_gates\_as\_an\_oscillator\-lSQqYPXR9](https://oshwlab.com/andyfierman/How_to_use_EasyEDA_Schmitt_Trigger_input_logic_gates_as_an_oscillator-lSQqYPXR9)