说明：  ASCII及进制转换： 2，8，10，16进制数互转，字符转ASCII,ASCII转字符，字符串和16进制数互转。二进制数的与/或运算。
(ASCII and hex conversion: 2,8,10,16 Mutual Convert decimal number, character transfer ASCII, ASCII to switch characters, strings, and 16 hexadecimal numbers Mutual Convert. Binary numbers and/or operation.)