1、1DATASEGMENTLED DB 3FH,06H,5BH,4FH,66H,6DH,7DH,07H DB 7FH,67H,77H,7CH,39H,5EH,79H,71HDATAENDSCODESEGMENTASSUMECS:CODE, DS:DATASTART:MOV AX,DATAMOV DS,AXMOV DX,0E48BHMOV AL,89HOUT DX,ALINOUT:MOV DX,0E48AHIN AL,DXAND AL,0FHMOV BX,OFFSET LEDXLATMOV DX,0E488HOUT DX,ALMOV AH,1INT 16HJZ INOUTMOV AH,4CHINT

2、 21HCODEENDSENDSTART2DATASEGMENTDATAENDSCODESEGMENTASSUMECS:CODE,DS:DATASTART:MOV AX,DATAMOV DS,AXMOV DX,0E48BH ;控制口地址：基地址+0BhMOV AL,89H ;OUT DX,ALINOUT:MOV DX,0E48AH ;C口輸入IN AL,DXMOV AH,AL AND AL,0FH ;AL高4位清0，只剩低4位MOV CL,4 SHR AH,CL ;AH低4位為輸入的高4位ADD AL,AH ;求和DAA ;bcd轉換MOV DX,0E488H ;A口輸出OUT DX,ALMO

3、V AH,1INT 16HJZ INOUT ;無按鍵轉移MOV AH,4CHINT 21HCODEENDSENDSTART3DATASEGMENTDATAENDSCODESEGMENTASSUMECS:CODE,DS:DATASTART:MOV AX,DATAMOV DS,AXMOV DX,0E48BH ;通過控制口設8255工作方式MOV AL,90HOUT DX,ALINOUT:MOV DX,0E488H ;A口輸入IN AL,DXMOV CL,0 ；CL用于計AL中1的個數，初始化為0LP2:TEST AL,80H ;判斷AL最高位是否為1JZ LP1 INC CL ;最高位是1，計數L

4、P1:SHL AL,1 ;AL左移1位，繼續判斷JNZ LP2MOV AL,AHMOV DX,0E48AH ;C口輸出OUT DX,AL MOV AH,1 INT 16HJZ INOUTMOV AH,4CHINT 21HCODEENDSENDSTART4DATASEGMENTLEDDB 3FH,06H,5BH,4FH,66H,6DH,7DH,07HDB 7FH,67H,77H,7CH,39H,5EH,79H,71HDATAENDSCODESEGMENTASSUMECS:CODE, DS:DATASTART:MOV AX,DATAMOV DS,AXMOV DX,0E48BH ;設置8255工作方

5、式MOV AL,80HOUT DX,ALMOV CH,0MOV CL,2 LOOP1:NOT CL AND CL,3 ；將CL變為3-CLMOV DX,0E488H ;A口輸出CL： 1或2MOV AL,CLOUT DX,ALLOOP2:MOV AL,CHMOV BX,OFFSET LEDXLAT ;換碼MOV DX,0E48AHOUT DX,AL ;C口輸出字形碼CALL DELAY ;延遲調用MOV AH,1INT 16HJNZ OOUTINC CHCMP CH,16 ;是否顯示完0-F 16個字符 JNZ LOOP2 ;未顯示完，繼續顯示MOV CH,0JMP LOOP1 ;已顯示完，回

6、到設置CL處繼續在另一位數碼管上顯示OOUT:MOV AH,4CHINT 21HDELAYPROC NEAR ；延遲程序段PUSH CXMOV SI,1500HXX:MOV CX,0FFFFHYY:LOOP YYDEC SIJNE XXPOP CXRETDELAYENDPCODEENDS5DATASEGMENTLEDDB 3FH,06H,5BH,4FH,66H,6DH,7DH,07HDB 7FH,67H,77H,7CH,39H,5EH,79H,71HDATAENDSCODESEGMENTASSUMECS:CODE, DS:DATASTART:MOV AX,DATAMOV DS,AXMOV DX

7、,0E48BHMOV AL,80HOUT DX,ALMOV CX,0LOOP1:CALL DISP ;調用延時 CALL DISPMOV AH,1INT 16HJNZ OOUTINC CLCMP CL,10JNZ LOOP1 ;不滿10，繼續加1 MOV CL,0 ;滿10進位INC CHCMP CH,6 JNZ LOOP1 ；不滿6，繼續加1 MOV CH,0 ；滿6，清零，從新開始計數JMP LOOP1OOUT:MOV AH,4CHINT 21HDISPPROC NEAR ;顯示CH、CL，一秒鐘 MOV SI,0FFFFHXX:MOV DX,0E488H MOV AL,2OUT DX,AL ;A口輸出2，用S1數碼管顯示 MOV AL,CH MOV BX,OFFSET LEDXLAT MOV DX,0E48AH ;C口輸出字形碼，0OUT DX,AL MOV AL,0 OUT DX,ALMOV DX,0E488HMOV AL,1OUT DX,AL ;A口輸出1，用S