说明: void wrti1(unsigned char i) { rw=0;di=0; cs1=1;cs2=1;cs3=0; P0=i; le=1; le=0; } void wrti2(unsigned char i) { rw=0;di=0; cs1=0;cs2=0;cs3=1; P0=i; le=1; le=0; } void wrti3(unsigned char i) { rw=0;di=0; cs1=1;cs2=0;cs3=1; P0=i; le=1; le=0; }
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