字符集与编码

http://www.ruanyifeng.com/blog/2007/10/ascii_unicode_and_utf-8.html

http://www.cnblogs.com/skynet/archive/2011/05/03/2035105.html

http://www.iteye.com/topic/97803

http://zh.wikipedia.org/zh-cn/%E5%AD%97%E7%AC%A6%E7%BC%96%E7%A0%81

http://www.douban.com/group/topic/6922168/

http://apps.hi.baidu.com/share/detail/33214212