The color control logic circuit 53 accepts color control logic signals at its inputs R , Y , G , BG , B , P , and W and develops at its outputs drive signals for red bus 5, green bus 6, and blue bus 7, respectively, to illuminate {HEAD ~ display element} 43 in {TAIL ~ a selected color} 
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The color control logic circuit 53 accepts color control logic signals at its inputs R , Y , G , BG , B , P , and W and develops at its outputs drive signals for red bus 5 , green bus 6 , and blue bus 7 , respectively , to illuminate { HEAD ~ display element } 43 in { TAIL ~ a selected color }
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD OTH REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL