顺序与分支程序设计
PUT:MOV CU,AL
AND CU,0FH
CMP CU,09H
JLE AB1
ADD CU,07H
AB1:ADD CU,30H
MOV BL,CU
MOV BUF,BL
AND AL,0F0H
MOV CL,4
ROR AL,CL
CMP AL,09H
JLE AB2
ADD AL,07H
AB2:ADD AL,30H
MOV BUF+1,AL
MOV AH,2
MOV DL,BUF+1
INT 21H
MOV DL,BUF
INT 21H
JIESHU:MOV AH,4CH
INT 21H
CODE ENDS
END START
执行程序EXAM1－7·EXE，若输入8 AC
B4
C16
D2 4屏幕上显示结果：