在学习单片机的时候，我们经常要要用到定时器，但是，要得到精确的定时，就必须计算好初值，此软件就是为你减轻计算的困扰的。还提供了常用单片机通信的波特率表。-learning SCM, we often have to use timers, but to be precise timing, it must be good preliminary calculations, the software is for you to reduce the calculation disturbed. Also provided a common MCU communication baud rate table.