Unicode是国际组织制定的可以容纳世界上所有文字和符号的字符编码方案。Unicode用数字0-0x10FFFF来映射这些字符，最多可以容纳1114112个字符，或者说有1114112个码位。码位就是可以分配给字符的数字。UTF-8、UTF-16、UTF-32都是将数字转换到程序数据的编码方案。-Unicode is an international organization to accommodate all the characters and symbols in the world of character encoding scheme. Unicode with the number 0-0x10FFFF to map these characters, can accommodate up to 1114112 characters, or 1114112 yards. A code bit is a number that can be assigned to a character. UTF-8, UTF-16, and UTF-32 are encoding schemes that convert numbers to program data.