Feature suggestion: Connecting instruments

[murvar]

I've been tasked with implementing a way to connect multiple simulated instruments with inputs and outputs. Would this be appreciated as part of PyVISA-sim? Otherwise I will create it as a separate layer.

If yes, do you have any suggestions on how to do this?

[MatthieuDartiailh]

I think the first step is to define an API to get access to the internal state of the simulated instrument. This definitively belong within pyvisa-sim I would say. After how one connects multiple instruments together could be external but may require some sort of observer pattern on the internal state of the simulated instruments.