利用51单片机,通过两位数码管显示秒,按键实现计时和停止计时 具体内容...答:A,R2 CJNE A,#100,T0E MOV R2,#0 INC R0 CJNE R0,#10,T0E MOV R0,#0 INC R1 CJNE A,#10,T0E MOV R1,#0T0E: RETIT004: CLR TR0 RETITABLE: ; 共阴极数码管显示代码表 DB 3FH,06H,5BH,4FH,66H ;01234 DB 6DH,7DH,07H,7FH,6FH ;56789END ...
51单片机一到九的段码答:你是说数码管的段码吗? 共阴极与共阳极不同 共阳极段码:uchar code table[]={ 0xc0,0xf9,0xa4,0xb0,0x99,0x92,0x82,0xf8,0x80,0x90,0x88,0x83,0xc6,0xa1,0x86,0x8e,0xbf};共阴极段码:uchar code table[]={ 0x3f,0x06,0x5b,0x4f,0x66,0x6d,0x7d,0x07,0x7f,0x6f,0x77...