关于小字库的源码,对于12点阵取模!方便在各种应用中使用不同的字体,可以方便于工作.-on small font source, 12 dot matrix tray! In various applications to facilitate the use of different fonts, easy to work.

普通计算器功能的实现（包含加、减、乘、除、取模、取余等功能）。-The realization of common calculator functions (including add, subtract, multiply, divide, modulus, take over other functions).