汇编语言程序设计：[15]显示日期时间
1、打开masm汇编编译程序，新建一个masm源文件脚本。
DATAS SEGMENT
;此处输入数据段代码
DATAS ENDS
STACKS SEGMENT
;此处输入堆栈段代码
STACKS ENDS
CODES SEGMENT
ASSUME CS:CODES,DS:DATAS,SS:STACKS
START:
MOV AX,DATAS
MOV DS,AX
;此处输入代码段代码
MOV AH,4CH
INT 21H
CODES ENDS
END START
![汇编语言程序设计：[15]显示日期时间](https://exp-picture.cdn.bcebos.com/87645f93cee8b0048644cabb79260d9a300ea9f7.jpg)
![汇编语言程序设计：[15]显示日期时间](https://exp-picture.cdn.bcebos.com/e86ba4b842406afe1f4bea711eee41c1b6279ff7.jpg)
2、在正文中输入我们的程序代码，并将文件命名为riqi.asm
STACK SEGMENT STACK
DW 200 DUP (?)
STACK ENDS
DATA SEGMENT
SPACE DB 1000 DUP (' ')
PATTERN DB 6 DUP (' '),0C9H,26 DUP (0CDH),0BBH,6 DUP (' ')
DB 6 DUP (' '),0BAH,26 DUP (20H),0BAH,6 DUP (' ')
DB 6 DUP (' '),0C8H,26 DUP (0CDH),0BCH,6 DUP (' ')
DBUFFER DB 8 DUP (':'),12 DUP (' ')
DBUFFER1 DB 20 DUP (' ')
STR DB 0DH,0AH, 'xiaobo welcome you to play',0dh,0ah,'****Designed by 1wangxiaobo@163.com!****',0dh,0ah,'^Henan University of Economics and Law^',0dh,0ah,'PLEASE INPUT DATE(D) OR TIME(T) OR QUIT(Q): $'
DATA ENDS
CODE SEGMENT
ASSUME CS:CODE,DS:DATA,ES:DATA,SS:STACK
START: MOV AX,0001H ;设置显示方式为40*25彩色文本方式
INT 10H
MOV AX,DATA
MOV DS,AX
MOV ES,AX
MOV BP,OFFSET SPACE
MOV DX,0B00H
MOV CX,1000
MOV BX,0040H
MOV AX,1300H
INT 10H
MOV BP,OFFSET PATTERN ;显示矩形条
MOV DX,0B00H
MOV CX,120
MOV BX,004EH
MOV AX,1301H
INT 10H
LEA DX,STR ;显示提示信息
MOV AH,9
INT 21H
MOV AH,1 ;从键盘输入单个字符
INT 21H
CMP AL,44H ;AL='D'？
JNE A
CALL DATE ;显示系统日期
A: CMP AL,54H ;AL='T'？
JNE B
CALL TIME ;显示系统时间
B: CMP AL,51H ;AL='Q'？
JNE START
MOV AH,4CH ;返回dos状态
INT 21H
DATE PROC NEAR ;显示日期子程序
DISPLAY:MOV AH,2AH ;取日期
INT 21H
MOV SI,0
MOV AX,CX
MOV BX,100
DIV BL
MOV BL,AH
CALL BCDASC1 ;日期数值转换成相应的ASCII码字符
MOV AL,BL
CALL BCDASC1
INC SI
MOV AL,DH
CALL BCDASC1
INC SI
MOV AL,DL
CALL BCDASC1
MOV BP,OFFSET DBUFFER1
MOV DX,0C0DH
MOV CX,20
MOV BX,004EH
MOV AX,1301H
INT 10H
MOV AH,02H ;设置光标位置
MOV DX,0300H
MOV BH,0
INT 10H
MOV BX,0018H
REPEA: MOV CX,0FFFFH ;延时
REPEAT:LOOP REPEAT
DEC BX
JNZ REPEA
MOV AH,01H ;读键盘缓冲区字符到AL寄存器
INT 16H
JE DISPLAY
JMP START
MOV AX,4C00H
INT 21H
RET
DATE ENDP
TIME PROC NEAR ;显示时间子程序
DISPLAY1:MOV SI,0
MOV BX,100
DIV BL
MOV AH,2CH ;取时间
INT 21H
MOV AL,CH
CALL BCDASC ;将时间数值转换成ASCII码字符
INC SI
MOV AL,CL
CALL BCDASC
INC SI
MOV AL,DH
CALL BCDASC
MOV BP,OFFSET DBUFFER
MOV DX,0C0DH
MOV CX,20
MOV BX,004EH
MOV AX,1301H
INT 10H
MOV AH,02H
MOV DX,0300H
MOV BH,0
INT 10H
MOV BX,0018H
RE: MOV CX,0FFFFH
REA: LOOP REA
DEC BX
JNZ RE
MOV AH,01H
INT 16H
JE DISPLAY1
JMP START
MOV AX,4C00H
INT 21H
RET
TIME ENDP
BCDASC PROC NEAR ;时间数值转换成ASCII码字符子程序
PUSH BX
CBW
MOV BL,10
DIV BL
ADD AL,'0'
MOV DBUFFER[SI],AL
INC SI
ADD AH,'0'
MOV DBUFFER[SI],AH
INC SI
POP BX
RET
BCDASC ENDP
BCDASC1 PROC NEAR ;日期数值转换成ASCII码字符子程序
PUSH BX
CBW
MOV BL,10
DIV BL
ADD AL,'0'
MOV DBUFFER1[SI],AL
INC SI
ADD AH,'0'
MOV DBUFFER1[SI],AH
INC SI
POP BX
RET
BCDASC1 ENDP
CODE ENDS
END START
![汇编语言程序设计：[15]显示日期时间](https://exp-picture.cdn.bcebos.com/4080a927ac5306887273be7e57e8904801fc96f7.jpg)
3、运行我们编辑的文件,在出现的提示信息中输入大写字母“D”,可显示系统当前日期；输入大写字母“T”,可显示系统当前时间；输入大写字母“Q”，可结束程序。
![汇编语言程序设计：[15]显示日期时间](https://exp-picture.cdn.bcebos.com/dda98e4800fc77f771514494c8715fdb372090f7.jpg)
![汇编语言程序设计：[15]显示日期时间](https://exp-picture.cdn.bcebos.com/5e615d715fdb36205765d63dabc5260f89358df7.jpg)
![汇编语言程序设计：[15]显示日期时间](https://exp-picture.cdn.bcebos.com/ccc83ec5260f88352ed5426ace078801397086f7.jpg)
![汇编语言程序设计：[15]显示日期时间](https://exp-picture.cdn.bcebos.com/dccb47de45078801cf2fcef5b18ca608a40f82f7.jpg)
![汇编语言程序设计：[15]显示日期时间](https://exp-picture.cdn.bcebos.com/444696013870d541c3d3bdbc2e0f94fc518c80f7.jpg)