Yes, you all are right!
I basically learnt it with a very nice man working on AF's 777! In this way, I learnt on the A320:
- FADEC (ECU, HMU, VSV, LPTCC...)
- PACKS, what is inside it, the RAM AIR....
- VENT (outflow valves, avionics, AEVC....)
-fuel tanks (refuel valves, refuel/defuel line, Engine feed...)
-And now the courant for the valves- and who is controlling them!
Still some doubts! Thanks a lot for your help! Will ask you if there is something else that is confusing me!