8位数码管秒表计时显示实验,拔掉JPLED跳线 使LED不显示初始状态8位数码管显示0000000.00按独立按键，计时开始 再按一次 计数停止 按第三次 计数值清零 -8-bit digital tube display stopwatch timing experiments JPLED jumper pulled out so that the initial state LED does not display an 8-

1.直接将烧写进单片机芯片即可 2.JPLED跳线要插上 独立键盘 SW19 SW20 为两个控制键 -1. Directly to the burn can be written into the single-chip chip jumpers to plug 2.JPLED independent SW19 SW20 keyboard keys for the two control