單片機原理及應用課程設計報告--基于單片機的8組搶答器設計(編輯修改稿)
2025-05-08 22:29 本頁面
【文章內容簡介】 : MOV A,P2 CJNE A,0FFH,D1 SJMP D0 D1: JB ,D2 MOV KEY,1 MOV P1,0FEH SETB RING SJMP D9 D2:JB ,D3 MOV KEY,2 MOV P1,0FDH SETB RING SJMP D9 D3: JB ,D4 MOV KEY,3 MOV P1,0FBH SETB RING SJMP D9 D4:JB ,D5 MOV KEY,4 MOV P1,0F7H SETB RING SJMP D9 D5:JB ,D6 MOV KEY,5 MOV P1,0EFH SETB RING SJMP D9 D6: JB ,D7 MOV KEY,6 MOV P1,0DFH SETB RING SJMP D9 D7: JB ,D8 MOV KEY,7 MOV P1,0BFH SETB RING SJMP D9 D8: JB ,D9 MOV KEY,8 MOV P1,07FH SETB RING SJMP D9 D9: CLR OK MOV 66H,KEY LCALL LEDDISP LJMP DD INT_0:SETB OK CLR RING MOV P1,0FFH MOV KEY,0 MOV 66H,KEY LCALL LEDDISP RETI leddisp:push psw push acc setb rs1 setb rs0 mov r0,66H mov r4,8 mov r5,60hloop: MOV MTD,R5 MOV MTD+1,@R0 MOV SLA,70H MOV SUBA,07H MOV NUMBYTE,02H LCALL IWRNBYTE LCALL DELY1 INC R0 INC R5 DJNZ R4,LOOP POP ACC POP PSW RETre7290: clr rst lcall dely setb rst lcall dely retdely :mov r7,80Hmin
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鄂ICP備17016276號-1