汇编程序编写和提高Word格式文档下载.doc

1、 convert: mov ah,1 int 21h cmp al,13 jz finish cmp al,a jb nextz ja next sub al,20h jmp next next: mov si,al inc si jmp convertfinish: mov dl,13 mov ah,2 int 21h mov dl,10 mov byte ptr si,$ lea dx,buf mov ah,9 MOV AH,4CH INT 21HCODES ENDS END START运行情况：流程图：2、 将键盘上输入的十六进制数转换成十进制数，并在屏幕上显示。DATA SEGMENT

2、 DATA1 DB 6 DUP（?）, DATA ENDSCODE SEGMENT CODE,DS:DATA MOV AX,DATA MOV DI,OFFSET DATA1+5 MOV BX,0 MOV CH,4 MOV CL,4 MOV SI,0AH JUDGE: MOV AH,01H CMP AL,13 JE TRANSPORT CMP AL,30H JB EXIT CMP AL,39H JBE LAB CMP AL,41H CMP AL,46H JBE LAB1 CMP AL,61H CMP AL,66H JA EXIT SUB AL,57H JMP LAB2LAB:SUB AL,30H

3、 JMP LAB2LAB1: SUB AL,37H LAB2: SHL BX,CL ADD BL,AL DEC CH JNZ JUDGETRANSPORT: MOV AX,BX DISPLAY: XOR DX,DX DIV SI ADD DL,30H MOV DI,DL DEC DI CMP AX,0 JNZ DISPLAY MOV AH,09H INT 21H EXIT: CODE ENDS 3、 利用中断调用，在屏幕上显示19之间随机数。中断号86H程序如下：此处输入数据段代码 ASSUME CS: MOV AX,DATAS MOV DS,AX call setInt86 int 86h

4、MOV AH,4CH INT 21H setInt86 proc mov ax,cs mov ds,ax mov si,offset do0 mov ax,0 mov es,ax mov di,200h mov cx,offset do0end-offset do0 cld rep movsb mov word ptr es:86h*4,200h86h*4+2,0 retsetInt86 endpdo0: MOV AH,0 INT 1AH ;读取当前时间CH：CL=时：分 MOV AL,DL ;DH：DL=秒：1/100 秒 MOV BL,9 DIV BL INC AH MOV DL,AH A

5、DD DL,30H MOV AH,2do0end:nop END START4、 键盘输入10个学生的成绩，编写一个程序统计60-69分，70-79分，80-89分，90-99分及100分的人数，分别存放在Score6，Score7，Score8，Score9和Score10单元中。【输入10个学生的成绩如下】65 98 78 82 88 95 72 62 90 100datas segment sentence db 0DH,0AH,the result $ grade dw 76,69,84,90,73,88,99,63,100,80 score6 db 0 score7 db 0 sco

6、re8 db 0 score9 db 0 score10 db 0 datas ends stacks segmentstacks endscodes segment assume cs:codes,ds:datas start: mov ax,datas mov ds,ax mov cx,10 call count call disp mov ah,4ch int 21hcount proc near mov si,0 mov ax,gradesi mov bl,10 div bl mov bl,al mov bh,0 sub bx,6 cmp bx,0 jae next1 next1: inc score6bx add si,2 loop next ret count endpdisp proc near lea si,score6 mov cx,5 loop1: mov dx,OFFSET sentence mov ah,9 int 21h mov dl,si add dl,30h mov ah,2 inc si loop loop1 disp endp codes ends end start效果如下：