The data entry system 105 typically includes one or more data entry devices 120, which include a user interface 122, and {TAIL ~ data entry controllers} 125, and {HEAD ~ data storage devices} 127 
The data entry system 105 typically includes one or more data entry devices 120 , which include a user interface 122 , and { TAIL ~ data entry controllers } 125 , and { HEAD ~ data storage devices } 127
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 OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH