freescale mc9s08qg8 串行通讯，定时器，PWM,和键盘的demo程序。-freescale mc9s08qg8 serial communication, timer, PWM, and keyboard of the demo program.

这是基于飞思卡尔单片机MC13213上的矩阵键盘驱动程序（包括中断处理，识别，去抖，双键同时按下等）-This is based on Freescale' s MC13213 microcontroller matrix keyboard driver (including interrupt handling, identification, to shake, double bond at the same time press, etc.)

飞思卡尔MC9S12XS128 使用矩阵键盘-Freescale MC9S12XS128 using a matrix keyboard