No wave signal on oscilloscope?

[StudentGoh]

Hello, I assume all the wires are connected properly but when I run the simulation and open the oscilloscope, there is no wave signal coming out on the output. There is signal on the input but the simulation time is so slow. What am I doing wrong?

Here is the circuit...

And I do have a reference...

[Maneh]

Hi

can you describe what is the functionality of your circuit? Maybe the reference itself is wrong.

[StudentGoh]

Hello, I'm supposedly building a pulse position modulator.