单片机3路抢答器课程设计

本设计已通过多次调试，很好用！ OK EQU 20H RING EQU 22H ORG 0000H LJMP MAIN ORG 0003H LJMP INTER0 ORG 000BH LJMP TIMER0 ;ORG 0013H ;LJMP INT1 ORG 001BH LJMP TIMER1 ORG 0030H MAIN: MOV R1,#30 MOV R2,#60 MOV TMOD,#11H MOV TH0,#0F0H MOV TL0,#0FFH MOV TH1,#3CH MOV TL1,#0B0H SETB EA SETB ET0 SETB ET1 SETB EX0 SETB EX1 CLR OK CLR RING SETB TR1 SETB TR1 TIMER0: MOV TH0,#0ECH MOV TL0,#0FFH JNB RING,OUT CPL P3.6 OUT: RETI TIMER1: MOV TH1,#3CH MOV TL1,#0B0H INC R0 RETI L0: MOV P1,#0FFH MOV A,P1 CJNE A,#0FEH,L1 ACALL TRUE1 L1: MOV P1,#0FFH MOV A,P1 CJNE A,#0FDH,L2 ACALL TRUE2 L2: MOV P1,#0FFH MOV A,P1 CJNE A,#0FCH,$+3 ACALL TRUE3 TRUE1: MOV A,R2 ;ACALL BARK MOV R6,A MOV R3,#01H CLR OK ACALL TIMER1 TRUE2: MOV A,R2 ;ACALL BARK MOV R6,A MOV R3,#01H CLR OK AJMP TIMER1 TRUE3: MOV A,R2; ACALL BARK MOV R6,A MOV R3,#01H CLR OK AJMP TIMER1 DISPLAY:MOV DPTR, #DATA1 MOV A,R3 MOVC A,@A+DPTR MOV P2,#0FEH MOV P0,A ACALL DELAY MOV DPTR,#DATA2 MOV A,R5 MOVC A,@A+DPTR MOV P2,#0FDH MOV P0,A ACALL DELAY MOV A,R4 MOVC A,@A+DPTR MOV P2,#0FBH MOV P0,A ACALL DELAY INC R3 RET DELAY:MOV R7,#50 DEL1: MOV R6,#91 DEL2: MOV R5,#100 DJNZ R5,$ DJNZ R6,DEL2 DJNZ R7,DEL1 RET INTER0: DATA1: DB 00H,06H,5BH,4FH,66H,6DH,7DH,07H,7FH,6FH,00H,71H DATA2: DB 3FH,06H,5BH,4FH,66H,6DH,7DH,07H,7FH,6FH,00H,71H END