thank u the information that you shared was of great help now iam workin on the DAQ block set as you said

Code for parallel port communication with matlab,....... dio = digitalio('parallel','LPT1') --> create an object data1 = addline(dio,0:7,0,'out') %Pin 2-9 data2 = addline(dio,0,2,'out') %Pin 1 data3 = addline(dio,1,2,'out') %Pin 14 If...

This thread was of great use for me thank u........