The display data read from the frame memory 600 are transmitted to {TAIL ~ the CRT} 700 via {HEAD ~ the graphic bus} 400, the superposition data controller 1000 and the display drive controller 910 
The display data read from the frame memory 600 are transmitted to { TAIL ~ the CRT } 700 via { HEAD ~ the graphic bus } 400 , the superposition data controller 1000 and the display drive controller 910
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH