原创 13．动态数码显示技术二

13．动态数码显示技术一
——LED数码管动态扫描显示数字1～８

一、电路和效果

二、汇编源程序

LED        EQU   P0
            ORG 00H

START:       MOV DPTR,#TABLE

DIR:          MOV R0,#0

              MOV R1,#01H

NEXT:         MOV A,R0

              MOVC A,@A+DPTR

              MOV LED,A
               
              MOV A,R1

              MOV P2,A

              LCALL DAY

              MOV P2,#00H  ;
            
              INC R0

              RL A

              MOV R1,A
          
             CJNE R0,#8,NEXT           

              SJMP START
;延时15ms

DAY:          MOV R6,#10H

LOOP1:           MOV R7,#38H

LOOP2:         DJNZ R7,LOOP2

              DJNZ R6,LOOP1

              RET

TABLE:       DB 01111001B,00100100B,00110000B,00011001B
                     DB 00010010B,00000010B,01111000B,00000000B

              END

三、仿真文件下载