基于單片機(jī)的簡(jiǎn)易電子時(shí)鐘設(shè)計(jì)-在線瀏覽
2024-08-07 19:48本頁(yè)面
【正文】 H RL A MOV 40H,A MOV P2,40H MOV A,32H MOVC A,A+DPTR MOV P0,A LCALL YS1MS MOV P0,0FFH MOV A,40H RL A MOV 40H,A MOV P2,40H MOV A,33H ADD A,10 MOVC A,A+DPTR MOV P0,A LCALL YS1MS MOV P0,0FFH MOV A,40H RL A MOV 40H,A MOV P2,40H MOV A,34H MOVC A,A+DPTR MOV P0,A LCALL YS1MS MOV P0,0FFH MOV A,40H RL A MOV 40H,A MOV P2,40H MOV A,35H MOVC A,A+DPTR MOV P0,A LCALL YS1MS MOV P0,0FFH MOV A,40H RL A MOV 40H,A JB TF0,JIA 如果TF0為1時(shí)，則執(zhí)行JIA，否則順序執(zhí)行 JNB ,P100 為0則 轉(zhuǎn)移到P100 JNB ,P1000 為0則 轉(zhuǎn)移到P1000 JNB ,P10000 為0則 轉(zhuǎn)移到P10000 AJMP XS 跳轉(zhuǎn)到 XSP100: MOV 30H,0 清零程序 MOV 31H,0 MOV 32H,0 MOV 33H,0 MOV 34H,0 MOV 35H,0JIA: CLR TF0 TF0清零 MOV A,35H 秒單位數(shù)據(jù)到A CJNE A,9,JIA1 與 9進(jìn)行比較，大于9就轉(zhuǎn)移到JIA1 MOV 35H,0 秒個(gè)位清零 MOV A,34H 秒十位數(shù)據(jù)到A CJNE A,5,JIA10 與5進(jìn)行比較，大于5就轉(zhuǎn)移到JIA10 MOV 34H,0 秒十位清零P10000: JNB ,P10000 為0則 轉(zhuǎn)移到P10000 MOV A,33H 取分的個(gè)位到A CJNE A,9,JIA100 與 9進(jìn)行比較，大于9就轉(zhuǎn)移到JIA100 MOV 33H,0 分的個(gè)位清零 MOV A,32H 分十位數(shù)據(jù)到A CJNE A,5,JIA1000 與5進(jìn)行比較，大于5就轉(zhuǎn)移到JIA1000 MOV 32H,0 分的十位清零P1000: JNB ,P1000 為0則 轉(zhuǎn)移到P1000 MOV A,31H 時(shí)個(gè)位數(shù)據(jù)到A CJNE A,9,JIA10000 與 9進(jìn)行比較，大于9就轉(zhuǎn)移到JIA10000 MOV 31H,0 時(shí)的個(gè)位清零
范文總結(jié)相關(guān)推薦
鄂ICP備17016276號(hào)-1