这个是串口通讯工具，无论windows编程，还是嵌入式的上位机和下位机通讯，调试时使用它都很方便-This is a serial communications tools, windows programming, or embedded PC and the next crew communications, debug it very convenient to use

linux时钟是嵌入式编程中至关重要的，它与我们熟悉的windows系统时钟存在着差别，这是快速了解学习linux时钟的有效资料。-linux embedded programming clock is vital that we are familiar with windows there is a difference between the system clock, which is quickly learning about linux clock valid data.