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多机通信

...sp;   switch(get_key)     {       case 0x11: // 1行1列，数字0       key=0xc0;   break; case 0x21: // 1行2列，数字1                  key=0xf9; break; case ...

可预设电压的数控电源

... temp; P20 = 1; P21 = 1; // 关闭数码管显示 TMOD = 0x11; // T0，T1工作方式1 /* 2ms 定时设置 */ TH0 = -2000/256; TL0 = 2000%256; /* 启动计数器0，关闭计数器1 */ TR0 = 1; ET0 = 1; TR1 = 0; ET1 = 1; EA = 1; count = 0; // 初...

LCD滚动显示汉字

...ned int uint; #define LLCD_CMD_WR PBYTE[0x10] #define LLCD_CMD_RD PBYTE[0x11] #define LLCD_DATA_WR PBYTE[0x12] #define LLCD_DATA_RD PBYTE[0x13] #define RLCD_CMD_WR PBYTE[0x20] #define RLCD_CMD_RD PBYTE[0x21] #define RLCD_DATA_WR PBYTE[0x22] #define RLCD_DATA_RD PBYTE[0x23] sbit busy=P0^1;...