Cleaning Up
When you no longer need a device object, you should clean up
the MATLAB workspace by removing the object from memory (the
engine) and from the workspace. These are the steps you take to end
a data acquisition session.
You remove device objects from memory with the delete function. For example, to delete the
analog input object ai created in the preceding
section:
delete(ai)
A deleted device object is invalid, which means that you cannot
connect it to the hardware. In this case, you should remove the object
from the MATLAB workspace. To remove device objects and other
variables from the MATLAB workspace, use the clear command.
clear ai
If you use clear on a device object that
is connected to hardware, the object is removed from the workspace
but remains connected to the hardware. You can restore cleared device
objects to the MATLAB workspace with the daqfind function.
 | Acquiring and Outputting Data | | Getting Started with Analog Input |  |
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