What is thoes arrow

[kiarash]

Hello

I know that this question is stupid, so please forgive me for that

I have attched a graph (Labview program) I do not know what is

the two green arrow on the border of the while loop (one of them is down side

and the other is upper side). sowould you please tell me what they are and how I can

make them?

Thanks

[PJS]

shift register. assuming a windows platform, right click on the edge of the loop and select "add shift register"

[altenbach]

Shift registers are a very central tool in LabVIEW, so you should familiarize yourself. A good start would be the LabVIEW help. Here's the section on loops. Look for the section on shift registers towards the middle of the page.

http://zone.ni.com/reference/en-XX/help/371361D-01/lvconcepts/for_loop_and_while_loop_structures/#Default_Data_in_Loops 

Who wrote that VI? There are quite a few odd things that could be improved:

1. What determines the loop rate?
2. There is a broken wire.
3. Why is the control labeled "y" in extended precision (EXT). I am pretty sure DBL would be sufficient.
4. "boolean to 0,1" belongs inside the small TRUE case since its output is not needed in the FALSE case.
5. Overlapping and complicated zigzag wire routing makes the code hard to read.
6. ...

[kiarash]

Thanks altenbach

you are an expert. by the way I have not made that code as I am a beginer, I just borrowed from one of the other students in my departement. by the way thanks for your point I do really appreciate your help man

Regrads