#inclu de //包含头文件，一般情况不需要改动，头文件包含特殊功能寄存器的定义 #inclu de #inclu de #inclu de #inclu de #inclu de #inclu de sbit RS = P2^4; //定义端口 sbit RW = P2^5; sbit EN = P2^6; sbit P0_0 = P0^0; sbit P0_1 = P0^1; sbit P0_2 = P0^2; sbit P0_3 = P0^3; sbit P0_4 = P0^4; sbit P0_5 = P0^5; sbit P0_6 = P0^6; sbit P0_7 = P0^7; sbit P1_0 = P1^0; sbit P1_1 = P1^1; sbit P1_2 = P1^2; sbit P1_3 = P1^3; sbit P1_4 = P1^4; sbit P1_5 = P1^5; sbit P1_6 = P1^6; sbit P1_7 = P1^7; sbit P2_0 = P2^0; sbit P2_1 = P2^1; sbit P2_2 = P2^2; sbit P2_3 = P2^3; sbit P2_4 = P2^4; sbit P2_5 = P2^5; sbit P2_6 = P2^6; sbit P2_7 = P2^7; sbit P3_0 = P3^0; sbit P3_1 = P3^1; sbit P3_2 = P3^2; sbit P3_3 = P3^3; sbit P3_4 = P3^4; sbit P3_5 = P3^5; sbit P3_6 = P3^6; sbit P3_7 = P3^7; sbit B_0 = B^0; sbit B_1 = B^1; sbit B_2 = B^2; sbit B_3 = B^3; s
