文档介绍：,acomputersimplyexecutesbinary--puter,fournecessaryelementsarethememory,centralprocessingunit(CPU,orsimplyprocessor),anexternalprocessorbus,andaninput/-1A--1A-,readsthedatarequiredbyeachinstruction,executestheactionrequiredbytheinstruction,,-“number”,awordis16bitslong,buteachmemorylocationhasonly8bitsandthustwo8-,,theprocessorplaces(enables)thebinary-,--1A-2,-1A-(oropcode,eachinstructionhasauniqueopcode),operandaddress,immediateoperands,