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1、数字钟设计1、功能描述：用所设计的实训板设计能显示时间和日期的数字时钟。2、电路图2功能实现：（1． 把“单片机系统”区域中的P1.0－P1.7端口用8芯排线连接到“动态数码显示”区域中的A－H端口上；（2． 把“单片机系统：区域中的P3.0－P3.7端口用8芯排线连接到“动态数码显示”区域中的S1－S8端口上；（3． 把“单片机系统”区域中的P0.0/AD0、P0.1/AD1、P0.2/AD2端口分别用导线连接到“独立式键盘”区域中的SP3、SP2、SP1端口上；3、程序框图：设置初值：second=0,mini
2、te=0,hour=12Hour=0Hour=24?Minite=60?minite=0,hour=hour+1Second=0,minite=minite+1Second=second+1延时1S分别动态显示小时和分钟；Second=60?6．汇编源程序HOURKBITP1.2MINITEKBITP1.1SECONDKBITP1.0SECONDEQU30HMINITEEQU31HHOUREQU32HORG0000HLJMPSTARTORG000BHLJMPINT_T0ORG0030HSTART:MOVSECOND,#00HMOVMINITE,
3、#00HMOVHOUR,#12MOVR0,#00HMOVTMOD,#01HMOVTH0,#3CHMOVTL0,#0B0HSETBEASETBET0SETBTR0NEXT:MOVA,#0F7HMOVP3,AMOVA,HOURMOVB,#10DIVABMOVDPTR,#TABLEMOVCA,@A+DPTRMOVP2,ACALLDELAYMOVA,#0FBHMOVP3,AMOVA,BMOVDPTR,#TABLEMOVCA,@A+DPTRMOVP2,ACALLDELAYMOVA,#0FDHMOVP3,AMOVA,MINITEMOVB,#10DIVABM
4、OVDPTR,#TABLEMOVCA,@A+DPTRMOVP2,ACALLDELAYMOVA,#0FEHMOVP3,AMOVA,BMOVDPTR,#TABLEMOVCA,@A+DPTRMOVP2,ACALLDELAYWT:JBSECONDK,NK1LCALLDELY10MSJBSECONDK,NK1JNBSECONDK,$INCSECONDMOVA,SECONDCJNEA,#60,NK1MOVSECOND,#00HNK1:JBMINITEK,NK2LCALLDELY10MSJBMINITEK,NK2JNBMINITEK,$INCMINITEMO
5、VA,MINITECJNEA,#60,NK2MOVMINITE,#00HNK2:JBHOURK,NK3LCALLDELY10MSJBHOURK,NK3JNBHOURK,$INCHOURMOVA,HOURCJNEA,#24,NK3MOVHOUR,#00NK3:MOVA,R0CJNEA,#20,NEXT1MOVR0,#0INCSECONDMOVA,SECONDCJNEA,#60,NEXT1MOVSECOND,#0INCMINITEMOVA,MINITECJNEA,#60,NEXT1MOVMINITE,#0INCHOURMOVA,HOURCJNEA,
6、#24,NEXT1MOVHOUR,#0next1:JMPNEXTTABLE:DB3FH,06H,5BH,4FH,66H,6DH,7DH,07H,7FH,6FH,40HINT_T0:CLRTR0INCR0MOVTH0,#3CHMOVTL0,#0B0HSETBTR0RETIDELAY:MOVR6,#2D1:MOVR7,#248DJNZR7,$DJNZR6,D1RETDELY10MS:MOVR6,#10DD1:MOVR7,#248DJNZR7,$DJNZR6,DD1RETEND
