The system further includes {HEAD ~ a digital processor} connected to a digital to analog converter for generating the potential to be applied between the working and the reference electrodes; and to {TAIL ~ an analog to digital converter} for receiving a digital value representative of the current 
The system further includes { HEAD ~ a digital processor } connected to a digital to analog converter for generating the potential to be applied between the working and the reference electrodes ; and to { TAIL ~ an analog to digital converter } for receiving a digital value representative of the current
OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH 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 TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH