发展时间线:
assic->gb2312->gbk1.0->gb18030
assic->unicode(万能码)
unicode向下兼容gb2312和gbk1.0
utf8和unicode的区别:
unicde:所有字符规定16bit存储
utf8:根据字符类型长度可变
assic->gb2312->gbk1.0->gb18030
assic->unicode(万能码)
unicode向下兼容gb2312和gbk1.0
unicde:所有字符规定16bit存储
utf8:根据字符类型长度可变