利用8051单片机串行口串并转换输出程序

                             MOV                       TL0,#00H                          ;延时 50mS 的常数
                             MOV                       TH0,#4CH        
                             DJNZ R1,EXIT
                             MOV                       R1,#20                         ;延时一秒的常数
                             MOV                       DPTR,#DATAb                        ;置表格基址
                             MOV                       A,R0                              ;置表格偏移量
                             MOVC A,@A+DPTR                         ;读表格数据
                             CLR                       TI
                             MOV                       SBUF,A                            ;串行发送数据
                             INC                       R0
                             CJNE R0,#0AH,EXIT ;判断是否到表尾
                             MOV                       R0,#00H                           ;调整表格偏移量
EXIT:
                             SETB TR0
                             SETB ET0                                ;开定时器0中断
                             POP                       PSW
                             POP                       ACC                               ;恢复现场
                             RETI
DATAb:                                          ;数码管显示常数表
                             DB 03H,9FH,25H,0DH,99H,49H,41H,1FH,01H,09H                        ;0 1 2 3 4 5 6 7 8 9
                             END

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本文关键字：单片机  程序  51单片机，单片机-工控设备 - 51单片机