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在编写输入法时，用到的一个结构数组，在结构数组中由于导入了太多的汉字导致堆栈溢出，其实就是RAM不够用了，因为程序中默认将全局的数组和变量放到RAM中去，我用的是msp430F149它的RAM有2k，还不小，但是我的汉字太多，导致2k的RAM也不够了，程序如下： struct t9PY_index { unsigned char *t9PY_T9; unsigned char *PY; unsigned char *PY_mb; }; struct t9PY_index t9PY_index2[] ={{"2","a","阿啊"}, {"3","e","讹俄娥峨鹅蛾额厄扼恶饿鄂遏"}, {"4","i","阿啊"}, {"5","l","厘梨狸"}, {"6","o","哦"}, {"7","p","阿啊"}, {"8","u","阿啊"}, {"9","w","阿啊"}, {"22","ba","八巴叭扒吧芭疤捌笆拔跋把靶坝爸罢"}, {"22","ca","擦"}, {"23","ce","册侧厕测策"}, {"24","ai","哎哀唉埃挨皑癌矮蔼艾爱隘碍"}, {"24","ci","疵词茨瓷慈辞磁雌此次刺赐"}, {"26","an","安氨鞍俺岸按案胺暗"}, {"26","ao","凹敖熬翱袄傲奥澳懊"}, ………………………. } 但是ROM有64k啊，如果可以放到ROM中就可以解决了，然后我查了一下，发现果真可以，而且很简单，只需加个const就可以了，这样它就不会把这个分配到ROM中去调用，同时也需将调用的变量也加const，这样匹配后就可以了，问题就ok了。 
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