單片機4*4按鍵數碼管顯示0-9

  單片機4*4按鍵數碼管顯示0-9   #include<reg51.h> #define KEY P1 //鍵盤 #define SEG P0 //數碼管 sbit COM=P2^0; // 數碼管com sbit OC = P2^1;//573鎖存器 char code TAB[]={//0xc0,0xf9,0xa4,0xb0,0x99,0x92,0x82,0xf8,0x

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