Initialisation of Feedback Nodes

[SercoSteveB]

The following VI was created, saved and then executed twice (the user presses the Run Arrow twice).  What is the value of Numeric Value Out following the second execution of the VI?

a) 8

b) 16

c) 32

d) 64

[whitecr]

Ans: A

[A.Bernau]

a
I think I am wrong. Because of the influence of "executed twice"
But then it should be 128?
I am confused I have to code it later ...
Ah, ok. Thank you for the detailed explanation crossrulz

[nik35324]

A

[crossrulz]

Well, if it was ran twice in the same execution, you would get 128.  Therefore the answer must be A.

The important thing here is that the FB Nodes are initialized on first call.  So you run the VI once, that execution ends.  So the next time you run it, the First Call will be TRUE and the FB Nodes are reinitialized.

[LordNobady]

A

[SercoSteveB]

Good point, question text amended to clarify.

[Mohammed_Atef]

A

[MrStevenUND]

A

[sathishp91]

A

[hemanth.wnp@gmail.com]

A

[ashwinilele]

A

[rsmrostov]

A

[SercoSteveB]

Answer: A.  Nice one whitecr, Andreas23, nik35324, crossrulz, LordNobady, Mohammed_Atef, MrStevenUND, sathishp91, hemanth.wnp@gmail.com, ashwinilele & rsmrostov.

Here we are using Feedback Nodes that are initialised on First Call.

[M.P.Bharghavi]

Ans:A

8