模拟洗衣机（I/O+数码管动态显示+键盘扫描）

1、洗衣机工作时间可在1~15分钟内任意设定（整分钟数），L13和L14显示分钟数（例如06）；

2、按键K1调整分钟，按键K2为确定键；

3、按下确定键后，流水灯LED1~LED4、LED10~LED13正流水20S、停10S、反流水20S、停10S反复运行；

4、每当流水灯运行1分钟，数码管显示的分钟自动减1，直到数码管显示 0 ，流水灯停止工作。-Simulation of washing machine (I/O+ digital display+ scan)

1 in 1-15 minutes, washing machine working time can be set (the number of whole minutes), L13 and L14 displays the number of minutes (for example, 06)

K1 2, key to adjust minutes, press K2 for the OK button

3, press OK key, the light water LED1~LED4, LED10~LED13 serial 20S, stopped the 10S, reverse flow 20S, 10S run repeatedly stopped

4, whenever water lights run 1 minute digital display automatic minus 1 minute until the digital display　0 , water lights stopped working.