{TAIL ~ Data} is transmitted to the printer under control of {HEAD ~ the microprocessor} 30 through a dual 4 bit latch 62 and the buffers 64,66 
{ TAIL ~ Data } is transmitted to the printer under control of { HEAD ~ the microprocessor } 30 through a dual 4 bit latch 62 and the buffers 64,66
TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH