P0=counter&0x0f怎么理解counter是一个变量

P0=counter&0x0f怎么理解counter是一个变量 counter&=0x0f;是什么意思? char key() { return((P0&0x0f)==0x0f)?0:(P0&0x0f); 例如：key=~P0&0x0f;if(key!=0) P2=key; 单片机程序key=~p0&0x0f;中的“~”符号表示啥意思 #define LCD_data P0 //数据口能这样定义吗,列：LCD_data =0x0f,即P0=0xf0?是这样吗,但是连接时显示LCD_data =0x0f这个语句12864A-3.C(268):error C213:left side of asn-op not an lvalue c语言的 temp=temp^0x0f是什么意思. if(++Time_Count = 50) return;中的return怎么理解?//#include #define uint unsigned int#define uchar unsigned charsbit RED_A = P0^0;sbit YELLOW_A = P0^1;sbit GREEN_A = P0^2;sbit RED_B = P0^3;sbit YELLOW_B = P0^4;sbit GREEN_B = P0^5;uchar Time_Coun 51单片机c语言中 P2&=0x0F; P2|=(1 P0=P0|0x80是什么意思 P0=p0 num[]={0x80,0xc0,0xe0,0xf0,0xf8,0xfc,0xfe,0xff,0x7f,0x3f,0x1f,0x0f,0x07,0x03,0x01,51单片机P0口接8各不同阻值的电阻,输出16分段的正弦波num[]={0x80,0xc0,0xe0,0xf0,0xf8,0xfc,0xfe,0xff,0x7f,0x3f,0x1f,0x0f,0x07,0x03,0x01,0x00};.P0 =num[ 点P0(X0,Y0)直线L:AX+BX+C=0 设计一个算法求P0到直线的距离 P0=0x00是什么意思 C语言中 P0=~(1 Counter Strike 怎么读 counter怎么读 counter-party怎么翻译?