使用keil写一个51单片机猜拳游戏软件

好的，首先你需要了解猜拳游戏的规则，然后才能写出相应的程序。猜拳游戏是让两个玩家随机出拳，石头剪刀布分别用数字0、1、2表示，然后根据规则判断输赢，并输出结果。

以下是一个简单的示例程序，你可以根据自己的需求进行修改和完善：

#include <reg52.h>
#include <stdlib.h>
#include <time.h>

sbit LED1 = P1^0;
sbit LED2 = P1^1;
sbit LED3 = P1^2;

void delay(unsigned int x);  // 延时函数
unsigned char getChoice();   // 获取玩家出拳
unsigned char getCpu();      // 获取CPU出拳
void judge(unsigned char player, unsigned char cpu); // 判断输赢

void main() {
    unsigned char player, cpu;
    unsigned char again;

    srand(time(NULL)); // 初始化随机数种子

    do {
        player = getChoice();
        cpu = getCpu();
        judge(player, cpu);

        // 等待重启游戏
        LED1 = LED2 = LED3 = 0;
        P0 = 0xff;
        P1 = 0xff;
        P2 = 0xff;
        P3 = 0xff;
        delay(1000);
        LED1 = LED2 = LED3 = 1;
        delay(1000);
        LED1 = LED2 = LED3 = 0;
        delay(1000);
        LED1 = LED2 = LED3 = 1;
        delay(1000);
        LED1 = LED2 = LED3 = 0;
        delay(1000);

        // 询问是否再玩一次
        do {
            printf("\nPlay again? (y/n): ");
            again = getchar();
            fflush(stdin);
        } while (again != 'y' && again != 'n');
    } while (again == 'y');
}

unsigned char getChoice() {
    unsigned char ch;

    do {
        printf("\nPlease choose (0 for Rock, 1 for Scissors, 2 for Paper): ");
        ch = getchar();
        fflush(stdin);
    } while (ch < '0' || ch > '2');

    return ch - '0';
}

unsigned char getCpu() {
    return rand() % 3;
}

void judge(unsigned char player, unsigned char cpu) {
    LED1 = LED2 = LED3 = 0;

    switch (player) {
    case 0: // Rock
        P0 = 0xfe;
        break;
    case 1: // Scissors
        P0 = 0xfd;
        break;
    case 2: // Paper
        P0 = 0xfb;
        break;
    default:
        break;
    }

    switch (cpu) {
    case 0: // Rock
        P1 = 0xfe;
        break;
    case 1: // Scissors
        P1 = 0xfd;
        break;
    case 2: // Paper
        P1 = 0xfb;
        break;
    default:
        break;
    }

    if (player == cpu) { // 平局
        LED1 = 1;
        LED2 = 1;
        LED3 = 1;
    } else if (player == 0 && cpu == 1 || player == 1 && cpu == 2 || player == 2 && cpu == 0) { // 玩家赢
        LED1 = 1;
    } else { // CPU赢
        LED3 = 1;
    }
}

void delay(unsigned int x) {
    unsigned int i, j;
    for (i = 0; i < x; i++) {
        for (j = 0; j < 120; j++) {
        }
    }
}

这个程序中，我们使用了51单片机的GPIO引脚控制LED灯，通过矩阵键盘获取用户的选择，同时使用了随机数函数获取CPU的出拳，最后再根据规则进行比较和输出结果。