what is the proper stimuli for hd 47?
its name is HK-47 and what do u mean by "stimuli"
if this is regards to his memory and functions you can do 2 things.
1: talk to him and ask to repair him, if you have enough repair points you can get somewhere.
2: just wait and see what happens through the flow of the game
i would just wait till the game progresses when u find out who his real meatbag...i mean master is.