Why do we get so many vi's when using "DAQmx Create Virtual Channel.vi​"?

Hi there,
Could anyone explain me why we get hundreds of sub-vi's when I use the
vi "DAQmx Create Virtual Channel"? This can easily be seen by exploring
the hierarchy of Labview examples such as "Acq&Graph Voltage - Ext
Clk.vi"???
This multitude of vi's considerably slows down my computer, especially at loading. Is there any way to get rid off that???
Thanks in advance for you help!
Jonas

Hi,
the easier you have to program, more subVI´s needed for your kind of application. Because the VI´s from DAQmx are polymorph, so many SubVI´s are included in the VI´s. In traditional DAQ you have several palettes for each kind of measuement method. Analog In, Analog Out, Digital, Counter, ...! In DAQmx you have one VI and that can all.
But, the performance of you application at runtime is not affected. Of course it takes some time to load, but just at development environment not as an application.
Figure 3. Polymorphic VIs simplify the NI-DAQmx API.
Link to Document:
http://zone.ni.com/devzone/conceptd.nsf/webmain/EE​47B125BB9E053686256FBC0014C384
Hope this helps.
Alex
NI Switzerland

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