Get some system informations
info = DAQ_SystemInfoAttribute (str_attribute)
a string: supported values: "DAQmx_Sys_DevNames", "DAQmx_Sys_NIDAQMajorVersion", "DAQmx_Sys_NIDAQMinorVersion", "DAQmx_Sys_NIDAQUpdateVersion"
DAQmx_Sys_DevNames: Indicates the names of all devices installed in the system.
DAQmx_Sys_DevNames returns [] if not devices detected.
DAQmx_Sys_NIDAQMajorVersion: Indicates the major portion of the installed version of NI-DAQmx, such as 7 for version 7.0.
DAQmx_Sys_NIDAQMinorVersion: Indicates the minor portion of the installed version of NI-DAQmx, such as 0 for version 7.0.
DAQmx_Sys_NIDAQUpdateVersion: Indicates the update portion of the installed version of NI-DAQmx, such as 1 for version 9.0.1.
double or string or [] depends of str_attribute value
Get some system informations.