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 {HEAD ~ signals} for red bus 5, green bus 6, and {TAIL ~ blue bus} 7, respectively, to illuminate display element 43 in a selected color 
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 { HEAD ~ signals } for red bus 5 , green bus 6 , and { TAIL ~ blue bus } 7 , respectively , to illuminate display element 43 in a selected color
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