arm linux 3x4的矩阵键盘驱动-arm linux 3x4 matrix keyboard driver

virtual keyboard qt 4.6 embedded linux pop up key board

实现一个在linux环境下运行的坦克大战游戏，没有用任何库函数，可以相应键盘的消息事件(利用时钟中断机制实现)-Battle City game, running a linux environment and did not use any library functions corresponding keyboard message event (clock interrupt mechanism to achieve)