定時計(jì)數(shù)器t0作定時應(yīng)用技術(shù)單片機(jī)原理單片機(jī)應(yīng)用單片機(jī)電路原理圖單片機(jī)程序-展示頁
2024-11-16 18:24本頁面
【正文】 ． 匯編源程序（查詢法） SECOND EQU 30H TCOUNT EQU 31H ORG 00H START: MOV SECOND,00H MOV TCOUNT,00H MOV TMOD,01H MOV TH0,(6553650000) / 256 MOV TL0,(6553650000) MOD 256 SETB TR0 DISP: MOV A,SECOND MOV B,10 DIV AB MOV DPTR,TABLE MOVC A,A+DPTR MOV P0,A MOV A,B MOVC A,A+DPTR MOV P2,A WAIT: JNB TF0,WAIT CLR TF0 MOV TH0,(6553650000) / 256 MOV TL0,(6553650000) MOD 256 INC TCOUNT MOV A,TCOUNT CJNE A,20,NEXT MOV TCOUNT,00H INC SECOND MOV A,SECOND CJNE A,60,NEX MOV SECOND,00H NEX: LJMP DISP NEXT: LJMP WAIT TABLE: DB 3FH,06H,5BH,4FH,66H,6DH,7DH,07H,7FH,6FH END 7． C語言源程序（查詢法） include unsigned char code dispcode[]={0x3f,0x06,0x5b,0x4f, 0x66,0x6d,0x7d,0
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