Rather, the programmable electronic component coupled to any subsequent circuit boards requires only the reference programmable electronic component to copy its contents upon receiving address and {HEAD ~ control signals} from {TAIL ~ the external source} to perform such an operation 
from
Rather , the programmable electronic component coupled to any subsequent circuit boards requires only the reference programmable electronic component to copy its contents upon receiving address and { HEAD ~ control signals } from { TAIL ~ the external source } to perform such an operation
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 REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH