简单时钟校时（仅秒位）设置功能的基本设计，时钟本身的计时显示方法用秒表说烁显-Simple clock school (only seconds bit) set up the basic design features, the clock s own method of using a stopwatch timer showed that significant Shuo

按下P2.4按键秒表开始走，按下2.5按键就停-Press the button P2.4 stopwatch started walking, stop pressing the button 2.5

这是一个具有启动,暂停和清零的精度为0.001的秒表-This is a startup, stop and reset accuracy of 0.001 a stopwatch

HF66F70A系列经典小程序，包含独立按键，lcd602，定时器中断等(HF66F70A u7CFB u5217 u7ECF u5138 u5C0F u7E0B u5E8F uFF0C u5305 u542B u72EC u7ACB u6309 u952E uFF0Clcd602 uFF0C u5B9A u65F6 u5668 u4E2D u65AD u7B49)