The answer depends on your hardare. If you are using an NI-DAQ device you can see the examples under
help>>>Search Examples>>>Hardware Input and Output>>>DAQ(Traditional DAQ)>>>Digital Input and Output>>>... The ... depends on the board you are using. If you can't find what you wnat there, your board may not support what you are attempting. Ben <a href="http://exchange.ni.com/servlet/ProcessRequest?RHIVEID=101&RPAGEID=261&HRedirected=True&HUserId=101_3529&RFORMNUMBER=6">Ben Rayner</a> <a href=" http://volt.ni.com/niwc/common.jsp?page=products_certification_cld&node=10638"> Certified LabVIEW Developer </a> www.DSAutomation.com