交通灯指挥系统的总体设计报告(13)

RET

WORK2 ENDP

WORK3 PROC NEAR MOV SEC,10 push cx mov cl,01 SHOW3:

CALL DELAY1

CALL CLEAR_LED ;清空RAM call show CMP SEC,00

JNZ CONTINUE3 MOV SEC,10 dec cl cmp cl,00 jE over

CONTINUE3: DEC SEC JMP SHOW3 over3: pop cx RET

WORK3 ENDP

show proc near mov al,sec mov ah,0 mov dl,10 div dl

mov bl,ah;将余数（即秒的个位）放在BL中 mov bh,al;将商（即秒的十位）放在BH中 call trans;调用8279显示秒的个位 NOP

mov bl,bh

call trans;调用8279显示秒的十位 NOP ret

show endp

TRANS PROC NEAR ;数码管显示程序