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An intellig ent dist rict access contr ol system based o n w ireless transmission is desig ned. T he card r eading mo dule, the wireless data transmission module , the LCD module and the rando m passwo rd keyboar d module are int roduced respectiv ely Besides, a 16 @ 16 lattice w or d database based o n e-Flash M M 36SB020 is desig ned. In or der to so lve the co nflict problems of the netw or k data tr ansmissio n, a method o f delaying time at r andom is put for war d. Key words: access co ntfatcat:y76pans3wzdrnht2us7er6n7fe