A communication control unit whose operations are controlledsolely by programmed instructions from the computing system to which the unit is attached; no program is stored or executed in the unit.; 一種通信控制器，它的操作只受連接該控制器的計(jì)算機(jī)系統(tǒng)編程指令 控制，該控制器中不存儲(chǔ)程序，也不執(zhí)行程序。 參閱communication controller。同telecommunication control unit。