利用msp430f1611 的定时器ta0产生700ms的计时（这是本人自己编写的，由于本人能力有限，但是程序已经调试通过，有不妥地方请谅解）-Ta0 use timer msp430f1611 have time 700ms (which is, I have written, because I have limited capacity, but the debugging procedures have been adopted, there is nothing wrong with understanding the local please)