control means for introducing dynamic operational signals to the chip , so as to cause instantaneous operational voltages at {TAIL ~ selected test points} as a function of {HEAD ~ operation} 
control means for introducing dynamic operational signals to the chip , so as to cause instantaneous operational voltages at { TAIL ~ selected test points } as a function of { HEAD ~ operation }
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD