51单片机数字时钟的显示按钮控制（单片机学习笔记八）

//key_Service()按键服务函数 //dis_Service()//数码管显示服务函数 ********************************************************** unsigned char wnd; unsigned char parm1 = 44; unsigned char parm2 = 55; unsigned char parm3 = 66; unsigned char parm4 = 77; void dis_Service(); void key_Service()//按键服务函数 { switch(Key_Scan()) { case 1: wnd ; if(wnd>3) wnd =0; break;//这段代码实现窗口切换 case 2: switch(wnd)//这段代码实现数据加一 { case 0: parm1 ; if(parm1>99) parm1 =0; break; case 1: parm2 ; if(parm2>99) parm2 =0; break; case 2: parm3 ; if(parm3>99) parm3 =0; break; case 3: parm4 ; if(parm4>99) parm4 =0; break; default: break; } case 3: switch(wnd)//这段代码实现数据减一 { case 0: parm1--; if(parm1>99) parm1 =99; break; case 1: parm2--; if(parm2>99) parm2 =99; break; case 2: parm3--; if(parm3>99) parm3 =99; break; case 3: parm4--; if(parm4>99) parm4 =99; break; default: break; } case 4: switch(wnd)//这段代码实现数据清零 { case 0: parm1 =0; break; case 1: parm2 =0; break; case 2: parm3 =0; break; case 3: parm4 =0; break; default: break; } default: break; } } ，现在小编就来说说关于51单片机数字时钟的显示按钮控制?下面内容希望能帮助到你，我们来一起看看吧!

51单片机数字时钟的显示按钮控制

//key_Service()按键服务函数 //dis_Service()//数码管显示服务函数 ********************************************************** unsigned char wnd; unsigned char parm1 = 44; unsigned char parm2 = 55; unsigned char parm3 = 66; unsigned char parm4 = 77; void dis_Service(); void key_Service()//按键服务函数 { switch(Key_Scan()) { case 1: wnd ; if(wnd>3) wnd =0; break;//这段代码实现窗口切换 case 2: switch(wnd)//这段代码实现数据加一 { case 0: parm1 ; if(parm1>99) parm1 =0; break; case 1: parm2 ; if(parm2>99) parm2 =0; break; case 2: parm3 ; if(parm3>99) parm3 =0; break; case 3: parm4 ; if(parm4>99) parm4 =0; break; default: break; } case 3: switch(wnd)//这段代码实现数据减一 { case 0: parm1--; if(parm1>99) parm1 =99; break; case 1: parm2--; if(parm2>99) parm2 =99; break; case 2: parm3--; if(parm3>99) parm3 =99; break; case 3: parm4--; if(parm4>99) parm4 =99; break; default: break; } case 4: switch(wnd)//这段代码实现数据清零 { case 0: parm1 =0; break; case 1: parm2 =0; break; case 2: parm3 =0; break; case 3: parm4 =0; break; default: break; } default: break; } }

void dis_Service()//数码管显示服务函数 { switch(wnd) { case 0: ledbuf[0] = 0; ledbuf[1] = 0; ledbuf[2] = parm1/10; ledbuf[3] = parm1; break; case 1: ledbuf[0] = 0; ledbuf[1] = 0; ledbuf[2] = parm2/10; ledbuf[3] = parm2; break; case 2: ledbuf[0] = 0; ledbuf[1] = 0; ledbuf[2] = parm3/10; ledbuf[3] = parm3; break; case 3: ledbuf[0] = 0; ledbuf[1] = 0; ledbuf[2] = parm4/10; ledbuf[3] = parm4; break; default: break; } }