ある文字が,文字コードごとにどんなビット列に対応するか

1文字あるいは短い文字列を入力し、「変換」ボタンをクリックしてください。


(UTF-8)
文字コード 文字 ビット列(2進表現) ビット列(16進表現)
ISO-8859-1 ???????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????N??????????????????????????????????????????????????????????????????????????????????????????????????????????????? 00111111001111110011111100111111001111110011111100111111001111110011111100111111001111110011111100111111001111110011111100111111001111110011111100111111001111110011111100111111001111110011111100111111001111110011111100111111001111110011111100111111001111110011111100111111001111110011111100111111001111110011111100111111001111110011111100111111001111110011111100111111001111110011111100111111001111110011111100111111001111110011111100111111001111110011111100111111001111110011111100111111001111110011111100111111001111110011111100111111001111110011111100111111001111110011111100111111001111110011111100111111001111110011111100111111001111110011111100111111001111110011111100111111001111110011111100111111001111110011111100111111001111110011111100111111001111110011111100111111001111110011111100111111001111110011111100111111001111110011111100111111001111110011111100111111001111110011111100111111001111110011111100111111001111110011111100111111001111110011111100111111001111110011111100111111001111110011111100111111001111110011111100111111001111110011111100111111001111110011111100111111001111110011111100111111001111110011111100111111001111110011111100111111001111110011111100111111001111110011111100111111001111110011111100111111001111110011111100111111001111110011111100111111001111110011111100111111001111110011111100111111001111110011111100111111001111110011111100111111001111110011111100111111001111110011111100111111001111110011111100111111001111110011111100111111001111110011111100111111001111110011111100111111001111110011111100111111001111110011111101001110001111110011111100111111001111110011111100111111001111110011111100111111001111110011111100111111001111110011111100111111001111110011111100111111001111110011111100111111001111110011111100111111001111110011111100111111001111110011111100111111001111110011111100111111001111110011111100111111001111110011111100111111001111110011111100111111001111110011111100111111001111110011111100111111001111110011111100111111001111110011111100111111001111110011111100111111001111110011111100111111001111110011111100111111001111110011111100111111001111110011111100111111001111110011111100111111001111110011111100111111001111110011111100111111001111110011111100111111001111110011111100111111001111110011111100111111001111110011111100111111001111110011111100111111001111110011111100111111001111110011111100111111001111110011111100111111001111110011111100111111001111110011111100111111001111110011111100111111 3f3f3f3f3f3f3f3f3f3f3f3f3f3f3f3f3f3f3f3f3f3f3f3f3f3f3f3f3f3f3f3f3f3f3f3f3f3f3f3f3f3f3f3f3f3f3f3f3f3f3f3f3f3f3f3f3f3f3f3f3f3f3f3f3f3f3f3f3f3f3f3f3f3f3f3f3f3f3f3f3f3f3f3f3f3f3f3f3f3f3f3f3f3f3f3f3f3f3f3f3f3f3f3f3f3f3f3f3f3f3f3f3f3f3f3f3f3f3f3f3f3f3f3f3f3f3f3f3f3f3f3f3f3f3f3f3f3f3f3f3f3f3f3f3f3f3f3f3f3f3f3f3f3f3f3f3f3f3f3f3f3f3f3f3f3f3f3f3f3f3f3f3f3f3f3f3f3f3f3f3f3f3f3f3f3f3f3f3f3f3f3f3f3f3f4e3f3f3f3f3f3f3f3f3f3f3f3f3f3f3f3f3f3f3f3f3f3f3f3f3f3f3f3f3f3f3f3f3f3f3f3f3f3f3f3f3f3f3f3f3f3f3f3f3f3f3f3f3f3f3f3f3f3f3f3f3f3f3f3f3f3f3f3f3f3f3f3f3f3f3f3f3f3f3f3f3f3f3f3f3f3f3f3f3f3f3f3f3f3f3f3f3f3f3f3f3f3f3f3f3f3f3f3f3f3f3f
SJIS-WIN ???????召?召?ォウ?召?宵タ?召?召?ォウ?。?宵、??????召?召?ォウ?召?宵タ?召?召?ォウ?。?宵、???????????????召?召?ォウ?。?宵、???召?召?ォウ?。?宵、?召?宵、?召???。?????召?召?ォウ?召?宵タ?召?召?ォウ?。?宵、??????召?召?ォウ?召?宵タ?召?召?ォウ?。?宵、???????????????????召ツ??。?。ュ?N?????召?召?ォウ?召?宵タ?召?召?ォウ?。?宵、??????召?召?ォウ?召?宵タ?召?召?ォウ?。?宵、???????????????召?召?ォウ?。?宵、???召?召?ォウ?。?宵、?召?宵、?召???。??? 0011111100111111001111110011111100111111001111110011111110001111101000100011111110001111101000100011111110101011101100110011111110001111101000100011111110001111101010101100000000111111100011111010001000111111100011111010001000111111101010111011001100111111101000010011111110001111101010101010010000111111001111110011111100111111001111110011111110001111101000100011111110001111101000100011111110101011101100110011111110001111101000100011111110001111101010101100000000111111100011111010001000111111100011111010001000111111101010111011001100111111101000010011111110001111101010101010010000111111001111110011111100111111001111110011111100111111001111110011111100111111001111110011111100111111001111110011111110001111101000100011111110001111101000100011111110101011101100110011111110100001001111111000111110101010101001000011111100111111001111111000111110100010001111111000111110100010001111111010101110110011001111111010000100111111100011111010101010100100001111111000111110100010001111111000111110101010101001000011111110001111101000100011111100111111001111111010000100111111001111110011111100111111001111111000111110100010001111111000111110100010001111111010101110110011001111111000111110100010001111111000111110101010110000000011111110001111101000100011111110001111101000100011111110101011101100110011111110100001001111111000111110101010101001000011111100111111001111110011111100111111001111111000111110100010001111111000111110100010001111111010101110110011001111111000111110100010001111111000111110101010110000000011111110001111101000100011111110001111101000100011111110101011101100110011111110100001001111111000111110101010101001000011111100111111001111110011111100111111001111110011111100111111001111110011111100111111001111110011111100111111001111110011111100111111001111110011111110001111101000101100001000111111001111111010000100111111101000011010110100111111010011100011111100111111001111110011111100111111100011111010001000111111100011111010001000111111101010111011001100111111100011111010001000111111100011111010101011000000001111111000111110100010001111111000111110100010001111111010101110110011001111111010000100111111100011111010101010100100001111110011111100111111001111110011111100111111100011111010001000111111100011111010001000111111101010111011001100111111100011111010001000111111100011111010101011000000001111111000111110100010001111111000111110100010001111111010101110110011001111111010000100111111100011111010101010100100001111110011111100111111001111110011111100111111001111110011111100111111001111110011111100111111001111110011111100111111100011111010001000111111100011111010001000111111101010111011001100111111101000010011111110001111101010101010010000111111001111110011111110001111101000100011111110001111101000100011111110101011101100110011111110100001001111111000111110101010101001000011111110001111101000100011111110001111101010101010010000111111100011111010001000111111001111110011111110100001001111110011111100111111 3f3f3f3f3f3f3f8fa23f8fa23fabb33f8fa23f8faac03f8fa23f8fa23fabb33fa13f8faaa43f3f3f3f3f3f8fa23f8fa23fabb33f8fa23f8faac03f8fa23f8fa23fabb33fa13f8faaa43f3f3f3f3f3f3f3f3f3f3f3f3f3f3f8fa23f8fa23fabb33fa13f8faaa43f3f3f8fa23f8fa23fabb33fa13f8faaa43f8fa23f8faaa43f8fa23f3f3fa13f3f3f3f3f8fa23f8fa23fabb33f8fa23f8faac03f8fa23f8fa23fabb33fa13f8faaa43f3f3f3f3f3f8fa23f8fa23fabb33f8fa23f8faac03f8fa23f8fa23fabb33fa13f8faaa43f3f3f3f3f3f3f3f3f3f3f3f3f3f3f3f3f3f3f8fa2c23f3fa13fa1ad3f4e3f3f3f3f3f8fa23f8fa23fabb33f8fa23f8faac03f8fa23f8fa23fabb33fa13f8faaa43f3f3f3f3f3f8fa23f8fa23fabb33f8fa23f8faac03f8fa23f8fa23fabb33fa13f8faaa43f3f3f3f3f3f3f3f3f3f3f3f3f3f3f8fa23f8fa23fabb33fa13f8faaa43f3f3f8fa23f8fa23fabb33fa13f8faaa43f8fa23f8faaa43f8fa23f3f3fa13f3f3f
EUC-JP ???????召?召?ォウ?召?宵タ?召?召?ォウ?。?宵、??????召?召?ォウ?召?宵タ?召?召?ォウ?。?宵、???????????????召?召?ォウ?。?宵、???召?召?ォウ?。?宵、?召?宵、?召???。?????召?召?ォウ?召?宵タ?召?召?ォウ?。?宵、??????召?召?ォウ?召?宵タ?召?召?ォウ?。?宵、???????????????????召ツ??。?。ュ?N?????召?召?ォウ?召?宵タ?召?召?ォウ?。?宵、??????召?召?ォウ?召?宵タ?召?召?ォウ?。?宵、???????????????召?召?ォウ?。?宵、???召?召?ォウ?。?宵、?召?宵、?召???。??? 0011111100111111001111110011111100111111001111110011111110111110101001000011111110111110101001000011111110001110101010111000111010110011001111111011111010100100001111111011111010101100100011101100000000111111101111101010010000111111101111101010010000111111100011101010101110001110101100110011111110001110101000010011111110111110101011001000111010100100001111110011111100111111001111110011111100111111101111101010010000111111101111101010010000111111100011101010101110001110101100110011111110111110101001000011111110111110101011001000111011000000001111111011111010100100001111111011111010100100001111111000111010101011100011101011001100111111100011101010000100111111101111101010110010001110101001000011111100111111001111110011111100111111001111110011111100111111001111110011111100111111001111110011111100111111001111111011111010100100001111111011111010100100001111111000111010101011100011101011001100111111100011101010000100111111101111101010110010001110101001000011111100111111001111111011111010100100001111111011111010100100001111111000111010101011100011101011001100111111100011101010000100111111101111101010110010001110101001000011111110111110101001000011111110111110101011001000111010100100001111111011111010100100001111110011111100111111100011101010000100111111001111110011111100111111001111111011111010100100001111111011111010100100001111111000111010101011100011101011001100111111101111101010010000111111101111101010110010001110110000000011111110111110101001000011111110111110101001000011111110001110101010111000111010110011001111111000111010100001001111111011111010101100100011101010010000111111001111110011111100111111001111110011111110111110101001000011111110111110101001000011111110001110101010111000111010110011001111111011111010100100001111111011111010101100100011101100000000111111101111101010010000111111101111101010010000111111100011101010101110001110101100110011111110001110101000010011111110111110101011001000111010100100001111110011111100111111001111110011111100111111001111110011111100111111001111110011111100111111001111110011111100111111001111110011111100111111001111111011111010100100100011101100001000111111001111111000111010100001001111111000111010100001100011101010110100111111010011100011111100111111001111110011111100111111101111101010010000111111101111101010010000111111100011101010101110001110101100110011111110111110101001000011111110111110101011001000111011000000001111111011111010100100001111111011111010100100001111111000111010101011100011101011001100111111100011101010000100111111101111101010110010001110101001000011111100111111001111110011111100111111001111111011111010100100001111111011111010100100001111111000111010101011100011101011001100111111101111101010010000111111101111101010110010001110110000000011111110111110101001000011111110111110101001000011111110001110101010111000111010110011001111111000111010100001001111111011111010101100100011101010010000111111001111110011111100111111001111110011111100111111001111110011111100111111001111110011111100111111001111110011111110111110101001000011111110111110101001000011111110001110101010111000111010110011001111111000111010100001001111111011111010101100100011101010010000111111001111110011111110111110101001000011111110111110101001000011111110001110101010111000111010110011001111111000111010100001001111111011111010101100100011101010010000111111101111101010010000111111101111101010110010001110101001000011111110111110101001000011111100111111001111111000111010100001001111110011111100111111 3f3f3f3f3f3f3fbea43fbea43f8eab8eb33fbea43fbeac8ec03fbea43fbea43f8eab8eb33f8ea13fbeac8ea43f3f3f3f3f3fbea43fbea43f8eab8eb33fbea43fbeac8ec03fbea43fbea43f8eab8eb33f8ea13fbeac8ea43f3f3f3f3f3f3f3f3f3f3f3f3f3f3fbea43fbea43f8eab8eb33f8ea13fbeac8ea43f3f3fbea43fbea43f8eab8eb33f8ea13fbeac8ea43fbea43fbeac8ea43fbea43f3f3f8ea13f3f3f3f3fbea43fbea43f8eab8eb33fbea43fbeac8ec03fbea43fbea43f8eab8eb33f8ea13fbeac8ea43f3f3f3f3f3fbea43fbea43f8eab8eb33fbea43fbeac8ec03fbea43fbea43f8eab8eb33f8ea13fbeac8ea43f3f3f3f3f3f3f3f3f3f3f3f3f3f3f3f3f3f3fbea48ec23f3f8ea13f8ea18ead3f4e3f3f3f3f3fbea43fbea43f8eab8eb33fbea43fbeac8ec03fbea43fbea43f8eab8eb33f8ea13fbeac8ea43f3f3f3f3f3fbea43fbea43f8eab8eb33fbea43fbeac8ec03fbea43fbea43f8eab8eb33f8ea13fbeac8ea43f3f3f3f3f3f3f3f3f3f3f3f3f3f3fbea43fbea43f8eab8eb33f8ea13fbeac8ea43f3f3fbea43fbea43f8eab8eb33f8ea13fbeac8ea43fbea43fbeac8ea43fbea43f3f3f8ea13f3f3f
UTF-8 ???????召?召?ォウ?召?宵タ?召?召?ォウ?。?宵、??????召?召?ォウ?召?宵タ?召?召?ォウ?。?宵、???????????????召?召?ォウ?。?宵、???召?召?ォウ?。?宵、?召?宵、?召???。?????召?召?ォウ?召?宵タ?召?召?ォウ?。?宵、??????召?召?ォウ?召?宵タ?召?召?ォウ?。?宵、???????????????????召ツ??。?。ュ?N?????召?召?ォウ?召?宵タ?召?召?ォウ?。?宵、??????召?召?ォウ?召?宵タ?召?召?ォウ?。?宵、???????????????召?召?ォウ?。?宵、???召?召?ォウ?。?宵、?召?宵、?召???。??? 001111110011111100111111001111110011111100111111001111111110010110001111101011000011111111100101100011111010110000111111111011111011110110101011111011111011110110110011001111111110010110001111101011000011111111100101101011101011010111101111101111101000000000111111111001011000111110101100001111111110010110001111101011000011111111101111101111011010101111101111101111011011001100111111111011111011110110100001001111111110010110101110101101011110111110111101101001000011111100111111001111110011111100111111001111111110010110001111101011000011111111100101100011111010110000111111111011111011110110101011111011111011110110110011001111111110010110001111101011000011111111100101101011101011010111101111101111101000000000111111111001011000111110101100001111111110010110001111101011000011111111101111101111011010101111101111101111011011001100111111111011111011110110100001001111111110010110101110101101011110111110111101101001000011111100111111001111110011111100111111001111110011111100111111001111110011111100111111001111110011111100111111001111111110010110001111101011000011111111100101100011111010110000111111111011111011110110101011111011111011110110110011001111111110111110111101101000010011111111100101101011101011010111101111101111011010010000111111001111110011111111100101100011111010110000111111111001011000111110101100001111111110111110111101101010111110111110111101101100110011111111101111101111011010000100111111111001011010111010110101111011111011110110100100001111111110010110001111101011000011111111100101101011101011010111101111101111011010010000111111111001011000111110101100001111110011111100111111111011111011110110100001001111110011111100111111001111110011111111100101100011111010110000111111111001011000111110101100001111111110111110111101101010111110111110111101101100110011111111100101100011111010110000111111111001011010111010110101111011111011111010000000001111111110010110001111101011000011111111100101100011111010110000111111111011111011110110101011111011111011110110110011001111111110111110111101101000010011111111100101101011101011010111101111101111011010010000111111001111110011111100111111001111110011111111100101100011111010110000111111111001011000111110101100001111111110111110111101101010111110111110111101101100110011111111100101100011111010110000111111111001011010111010110101111011111011111010000000001111111110010110001111101011000011111111100101100011111010110000111111111011111011110110101011111011111011110110110011001111111110111110111101101000010011111111100101101011101011010111101111101111011010010000111111001111110011111100111111001111110011111100111111001111110011111100111111001111110011111100111111001111110011111100111111001111110011111100111111111001011000111110101100111011111011111010000010001111110011111111101111101111011010000100111111111011111011110110100001111011111011110110101101001111110100111000111111001111110011111100111111001111111110010110001111101011000011111111100101100011111010110000111111111011111011110110101011111011111011110110110011001111111110010110001111101011000011111111100101101011101011010111101111101111101000000000111111111001011000111110101100001111111110010110001111101011000011111111101111101111011010101111101111101111011011001100111111111011111011110110100001001111111110010110101110101101011110111110111101101001000011111100111111001111110011111100111111001111111110010110001111101011000011111111100101100011111010110000111111111011111011110110101011111011111011110110110011001111111110010110001111101011000011111111100101101011101011010111101111101111101000000000111111111001011000111110101100001111111110010110001111101011000011111111101111101111011010101111101111101111011011001100111111111011111011110110100001001111111110010110101110101101011110111110111101101001000011111100111111001111110011111100111111001111110011111100111111001111110011111100111111001111110011111100111111001111111110010110001111101011000011111111100101100011111010110000111111111011111011110110101011111011111011110110110011001111111110111110111101101000010011111111100101101011101011010111101111101111011010010000111111001111110011111111100101100011111010110000111111111001011000111110101100001111111110111110111101101010111110111110111101101100110011111111101111101111011010000100111111111001011010111010110101111011111011110110100100001111111110010110001111101011000011111111100101101011101011010111101111101111011010010000111111111001011000111110101100001111110011111100111111111011111011110110100001001111110011111100111111 3f3f3f3f3f3f3fe58fac3fe58fac3fefbdabefbdb33fe58fac3fe5aeb5efbe803fe58fac3fe58fac3fefbdabefbdb33fefbda13fe5aeb5efbda43f3f3f3f3f3fe58fac3fe58fac3fefbdabefbdb33fe58fac3fe5aeb5efbe803fe58fac3fe58fac3fefbdabefbdb33fefbda13fe5aeb5efbda43f3f3f3f3f3f3f3f3f3f3f3f3f3f3fe58fac3fe58fac3fefbdabefbdb33fefbda13fe5aeb5efbda43f3f3fe58fac3fe58fac3fefbdabefbdb33fefbda13fe5aeb5efbda43fe58fac3fe5aeb5efbda43fe58fac3f3f3fefbda13f3f3f3f3fe58fac3fe58fac3fefbdabefbdb33fe58fac3fe5aeb5efbe803fe58fac3fe58fac3fefbdabefbdb33fefbda13fe5aeb5efbda43f3f3f3f3f3fe58fac3fe58fac3fefbdabefbdb33fe58fac3fe5aeb5efbe803fe58fac3fe58fac3fefbdabefbdb33fefbda13fe5aeb5efbda43f3f3f3f3f3f3f3f3f3f3f3f3f3f3f3f3f3f3fe58facefbe823f3fefbda13fefbda1efbdad3f4e3f3f3f3f3fe58fac3fe58fac3fefbdabefbdb33fe58fac3fe5aeb5efbe803fe58fac3fe58fac3fefbdabefbdb33fefbda13fe5aeb5efbda43f3f3f3f3f3fe58fac3fe58fac3fefbdabefbdb33fe58fac3fe5aeb5efbe803fe58fac3fe58fac3fefbdabefbdb33fefbda13fe5aeb5efbda43f3f3f3f3f3f3f3f3f3f3f3f3f3f3fe58fac3fe58fac3fefbdabefbdb33fefbda13fe5aeb5efbda43f3f3fe58fac3fe58fac3fefbdabefbdb33fefbda13fe5aeb5efbda43fe58fac3fe5aeb5efbda43fe58fac3f3f3fefbda13f3f3f
UHC ???????召?召????召?宵??召?召??????宵???????召?召????召?宵??召?召??????宵????????????????召?召??????宵????召?召??????宵??召?宵??召?????????召?召????召?宵??召?召??????宵???????召?召????召?宵??召?召??????宵????????????????????召????????N?????召?召????召?宵??召?召??????宵???????召?召????召?宵??召?召??????宵????????????????召?召??????宵????召?召??????宵??召?宵??召??????? 0011111100111111001111110011111100111111001111110011111111100001101011110011111111100001101011110011111100111111001111110011111111100001101011110011111111100001101100100011111100111111111000011010111100111111111000011010111100111111001111110011111100111111001111110011111111100001101100100011111100111111001111110011111100111111001111110011111111100001101011110011111111100001101011110011111100111111001111110011111111100001101011110011111111100001101100100011111100111111111000011010111100111111111000011010111100111111001111110011111100111111001111110011111111100001101100100011111100111111001111110011111100111111001111110011111100111111001111110011111100111111001111110011111100111111001111110011111111100001101011110011111111100001101011110011111100111111001111110011111100111111001111111110000110110010001111110011111100111111001111111110000110101111001111111110000110101111001111110011111100111111001111110011111100111111111000011011001000111111001111111110000110101111001111111110000110110010001111110011111111100001101011110011111100111111001111110011111100111111001111110011111100111111001111111110000110101111001111111110000110101111001111110011111100111111001111111110000110101111001111111110000110110010001111110011111111100001101011110011111111100001101011110011111100111111001111110011111100111111001111111110000110110010001111110011111100111111001111110011111100111111001111111110000110101111001111111110000110101111001111110011111100111111001111111110000110101111001111111110000110110010001111110011111111100001101011110011111111100001101011110011111100111111001111110011111100111111001111111110000110110010001111110011111100111111001111110011111100111111001111110011111100111111001111110011111100111111001111110011111100111111001111110011111100111111001111110011111111100001101011110011111100111111001111110011111100111111001111110011111100111111010011100011111100111111001111110011111100111111111000011010111100111111111000011010111100111111001111110011111100111111111000011010111100111111111000011011001000111111001111111110000110101111001111111110000110101111001111110011111100111111001111110011111100111111111000011011001000111111001111110011111100111111001111110011111100111111111000011010111100111111111000011010111100111111001111110011111100111111111000011010111100111111111000011011001000111111001111111110000110101111001111111110000110101111001111110011111100111111001111110011111100111111111000011011001000111111001111110011111100111111001111110011111100111111001111110011111100111111001111110011111100111111001111110011111100111111111000011010111100111111111000011010111100111111001111110011111100111111001111110011111111100001101100100011111100111111001111110011111111100001101011110011111111100001101011110011111100111111001111110011111100111111001111111110000110110010001111110011111111100001101011110011111111100001101100100011111100111111111000011010111100111111001111110011111100111111001111110011111100111111 3f3f3f3f3f3f3fe1af3fe1af3f3f3f3fe1af3fe1b23f3fe1af3fe1af3f3f3f3f3f3fe1b23f3f3f3f3f3f3fe1af3fe1af3f3f3f3fe1af3fe1b23f3fe1af3fe1af3f3f3f3f3f3fe1b23f3f3f3f3f3f3f3f3f3f3f3f3f3f3f3fe1af3fe1af3f3f3f3f3f3fe1b23f3f3f3fe1af3fe1af3f3f3f3f3f3fe1b23f3fe1af3fe1b23f3fe1af3f3f3f3f3f3f3f3f3fe1af3fe1af3f3f3f3fe1af3fe1b23f3fe1af3fe1af3f3f3f3f3f3fe1b23f3f3f3f3f3f3fe1af3fe1af3f3f3f3fe1af3fe1b23f3fe1af3fe1af3f3f3f3f3f3fe1b23f3f3f3f3f3f3f3f3f3f3f3f3f3f3f3f3f3f3f3fe1af3f3f3f3f3f3f3f3f4e3f3f3f3f3fe1af3fe1af3f3f3f3fe1af3fe1b23f3fe1af3fe1af3f3f3f3f3f3fe1b23f3f3f3f3f3f3fe1af3fe1af3f3f3f3fe1af3fe1b23f3fe1af3fe1af3f3f3f3f3f3fe1b23f3f3f3f3f3f3f3f3f3f3f3f3f3f3f3fe1af3fe1af3f3f3f3f3f3fe1b23f3f3f3fe1af3fe1af3f3f3f3f3f3fe1b23f3fe1af3fe1b23f3fe1af3f3f3f3f3f3f3f

SJIS-Win,EUC-JP: Windows(SJIS-Win=CP932)、UNIX(EUC-JP)で日本語扱うための文字コード。