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中国建站平台网,wordpress 36kr 模板,西城做网站公司,引擎搜索目录一、补充 （code） 二、例程 （1）例程1：数码管显示某一位（某一杠）。以点亮8段数码管最上面的横杠为例。 （2）例程2：数码管的8个段依次点亮（其他…

区别：不写code（程序读取快），代表所创建的数组被单片机从程序存储器中读取，存入单片机的内存中（IM）；写code（程序读取较慢，不影响数码管）代表所创建的数组直接存储到程序存储器中，单片机不会把数组存入IM中；但是如果编写点阵等，是推荐写code。

二、例程

（1）例程1：数码管显示某一位（某一杠）。以点亮8段数码管最上面的横杠为例。

//头文件声明区域
#include <STC15F2K60S2.H>//程序主体
void main()
{P2 = 0XA0;P0 = OX00;P2 = 0X80;P0 = 0XFF;//初始化程序P2 = 0XC0;P0 = 0X01;P2 = 0XFF;P0 = 0XFF;//打开第一个数码管程序P0 = 0XFE;//1111 1110while(1);}

（2）例程2：数码管的8个段依次点亮（其他保持熄灭）

//头文件声明区域
#include <STC15F2K60S2.H>
#include<intrins.h>
//变量声明区域
unsigned char SEG = 0;//函数定义区域
void Delay(unsigned int time)		//@11.0592MHz
{unsigned char i, j;while(time--){_nop_();i = 2;j = 199;do{while (--j);} while (--i);}}}
void SEG_Left(void)
{for(SEG = 0;SEG < 8;SEG++){P0 = ~(0x01<<i);Delay(500);}}//程序主体
void main()
{P2 = 0XA0;P0 = OX00;P2 = 0X80;P0 = 0XFF;//初始化程序P2 = 0XC0;P0 = 0X01;P2 = 0XFF;P0 = 0XFF;//打开第一个数码管程序while(1){SEG_Left();}}

（3）例程3：数码管显示某一个数值。（本例以点亮8段数码管显示数组“1”为例）

//头文件声明区域
#include <STC15F2K60S2.H>//程序主体
void main()
{P2 = 0XA0;P0 = OX00;P2 = 0X80;P0 = 0XFF;//初始化程序P2 = 0XC0;P0 = 0X01;P2 = 0XFF;P0 = 0XFF;//打开第一个数码管程序P0 = 0XF9;while(1);}

（4）例程4：数码管依次显示0-9、-、全部熄灭，显示间隔为500MS;

#include <STC15F2K60S2.H>void main()
{P2 = 0XA0;P0 = OX00;P2 = 0X80;P0 = 0XFF;//初始化程序P2 = 0XC0;P0 = 0X01;P2 = 0XFF;P0 = 0XFF;//打开第一个数码管程序while(1){P0 = 0XC0; Delay(500);//0P0 = 0XF9; Delay(500);//1P0 = 0XA4; Delay(500);//2P0 = 0XB0; Delay(500);//3P0 = 0X99; Delay(500);//4P0 = 0X92; Delay(500);//5P0 = 0X82; Delay(500);//6P0 = 0XF8; Delay(500);//7P0 = 0X80; Delay(500);//8P0 = 0X90; Delay(500);//9P0 = 0XBF; Delay(500);//-P0 = 0XFF; Delay(500);//全部熄灭}}

（5）例程5：数码管依次显示:0-9、-、全部熄灭，每隔数码管显示间隔500MS;要求数码管码值使用数组，功能函数使用for循环。

//头文件声明区域
#include <STC15F2K60S2.H>
#include<intrins.h>
//变量声明区域
unsigned char code SEG[] = {0XF0,0XF9,0XA4,0XB0,0X99,0X92,0X82,0XF8,0X80,0X90,0XBF,0XFF};
unsigned int i = 0;
//函数定义区域
void Delay(unsigned int time)		//@11.0592MHz
{unsigned char i, j;while(time--){_nop_();i = 2;j = 199;do{while (--j);} while (--i);}}//程序主体
void main()
{P2 = 0XA0;P0 = 0X00;P2 = 0X80;P0 = 0XFF;//初始化程序P2 = 0XC0;P0 = 0X01;P2 = 0XFF;P0 = 0XFF;//打开第一个数码管程序while(1){for(i = 0;i < 11;i++){P0 = SEG[i];Delay(500);}}}

（6）例程6：按键控制数码管显示。S7、S6、S5、S4按键分别控制数码管显示1、2、3、4数字。

//头文件声明区域
#include <STC15F2K60S2.H>
#include<intrins.h>
//变量声明区域
unsigned char code SEG[] = {0XF0,0XF9,0XA4,0XB0,0X99,0X92,0X82,0XF8,0X80,0X90,0XBF,0XFF};
unsigned char S7_Flag = 0,S6_Flag = 0,S5_Flag = 0,S4_Flag = 0;
//函数定义区域
void Delay(unsigned int time)		//@11.0592MHz
{unsigned char i, j;while(time--){_nop_();i = 2;j = 199;do{while (--j);} while (--i);}}
//按键扫描函数
void KeyScan(void)
{if(P30 == 0){Delay(10);if(P30 == 0) S7_Flag = 1;while(!P30);}else if(P31 == 0){Delay(10);if(P31 == 0) S6_Flag = 1;while(!P30);}else if(P32 == 0){Delay(10);if(P32 == 0) S5_Flag = 1;while(!P30);}else if(P31 == 0){Delay(10);if(P33 == 0) S4_Flag = 1;while(!P30);}}//程序主体
void main()
{P2 = 0XA0;P0 = 0X00;P2 = 0X80;P0 = 0XFF;//初始化程序P2 = 0XC0;P0 = 0X01;P2 = 0XFF;P0 = 0XFF;//打开第一个数码管程序while(1){KeyScan();if(P30 == 0) {S7_Flag = 0;P0 = SEG[1];}if(P31 == 0) {S6_Flag = 0;P0 = SEG[2];}if(P32 == 0) {S5_Flag = 0;P0 = SEG[3];}if(P33 == 0) {S4_Flag = 0;P0 = SEG[4];}}}

（7）例程7：按键控制数码管正及时、倒计时。本例以S7按键按下数码管开始0->9正计时、S6按键按下数码管开始9->0倒计时。注意：按键采用松手检测

//头文件声明区域
#include <STC15F2K60S2.H>
#include<intrins.h>
//变量声明区域
unsigned char code SEG[] = {0XF0,0XF9,0XA4,0XB0,0X99,0X92,0X82,0XF8,0X80,0X90,0XBF,0XFF};
unsigned char S7_Flag = 0,S6_Flag = 0,S5_Flag = 0,S4_Flag = 0;
unsigned char SEG_Flag = 0;
unsigned int i = 0;
//函数定义区域
void Delay(unsigned int time)		//@11.0592MHz
{unsigned char i, j;while(time--){_nop_();i = 2;j = 199;do{while (--j);} while (--i);}}
//按键扫描函数
void KeyScan(void)
{if(P30 == 0){Delay(10);if(P30 == 0) S7_Flag = 1;while(!P30);}else if(P31 == 0){Delay(10);if(P31 == 0) S6_Flag = 1;while(!P30);}else if(P32 == 0){Delay(10);if(P32 == 0) S5_Flag = 1;while(!P30);}else if(P31 == 0){Delay(10);if(P33 == 0) S4_Flag = 1;while(!P30);}}//程序主体
void main()
{P2 = 0XA0;P0 = 0X00;P2 = 0X80;P0 = 0XFF;//初始化程序P2 = 0XC0;P0 = 0X01;P2 = 0XFF;P0 = 0XFF;//打开第一个数码管程序while(1){KeyScan();if(P30 == 0) {S7_Flag = 0;SEG_Flag = 1;}if(P31 == 0) {S6_Flag = 0;SEG_Flag = 2;}if(SEG_Flag == 1)		//正计时{for(i = 0;i < 10;i++){P0 = SEG[i];Delay(1000);}}if(SEG_Flag == 2)		//倒计时{for(i = 9;i >= 0;i--){P0 = SEG[i];Delay(1000);}}}}

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