basic median filter simulation

本次课程实践是利用keil uvision3软件和ISIS7 professional软件设计一个基于LCP2138芯片的简易电子琴仿真，能够实现16个琴键，具有电子琴功能，能选择和循环播放3首乐曲 ，音量可调这三个基本功能。-The course practice is to use keil uvision3 ISIS7 professional software design software and a simple keyboard-based LCP2138 chip simulat

scull_character_driver 内存模拟字符驱动，熟悉在linux下些驱动的基本步骤。和几个中要的结构体。-scull_character_driver memory simulation character-driven, more familiar with the linux drivers under the basic steps. And a few in to the structure.