说明: sbit RS=P2^0 ; //P1.0之代称为RS sbit RW=P2^1 ; //P1.1之代称为RW sbit E=P2^2 ; //P1.2之代称为E sbit ADCRD=P3 ^0 ; //设定P3.0为ADCRD的功能接脚 sbit ADCWR=P3 ^1 ; //设定P3.1为ADCW R的功能接脚 char code *keycode[]={"0","1","2","3","4","5","6","7","8","9"}; char code *ptr ; char co
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