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 ??????????????????????????????????^?????????????????????????????????^????????????????????????????????????????????????f??????????????????????????????????^?????????????????????????????????^????????????????????????????N????????????????????????????????^?????????????????????????????????^????????????????????????????????????????????????f????? 00111111001111110011111100111111001111110011111100111111001111110011111100111111001111110011111100111111001111110011111100111111001111110011111100111111001111110011111100111111001111110011111100111111001111110011111100111111001111110011111100111111001111110011111100111111010111100011111100111111001111110011111100111111001111110011111100111111001111110011111100111111001111110011111100111111001111110011111100111111001111110011111100111111001111110011111100111111001111110011111100111111001111110011111100111111001111110011111100111111001111110101111000111111001111110011111100111111001111110011111100111111001111110011111100111111001111110011111100111111001111110011111100111111001111110011111100111111001111110011111100111111001111110011111100111111001111110011111100111111001111110011111100111111001111110011111100111111001111110011111100111111001111110011111100111111001111110011111100111111001111110011111100111111001111110011111101100110001111110011111100111111001111110011111100111111001111110011111100111111001111110011111100111111001111110011111100111111001111110011111100111111001111110011111100111111001111110011111100111111001111110011111100111111001111110011111100111111001111110011111100111111001111110101111000111111001111110011111100111111001111110011111100111111001111110011111100111111001111110011111100111111001111110011111100111111001111110011111100111111001111110011111100111111001111110011111100111111001111110011111100111111001111110011111100111111001111110011111101011110001111110011111100111111001111110011111100111111001111110011111100111111001111110011111100111111001111110011111100111111001111110011111100111111001111110011111100111111001111110011111100111111001111110011111100111111001111110100111000111111001111110011111100111111001111110011111100111111001111110011111100111111001111110011111100111111001111110011111100111111001111110011111100111111001111110011111100111111001111110011111100111111001111110011111100111111001111110011111100111111001111110101111000111111001111110011111100111111001111110011111100111111001111110011111100111111001111110011111100111111001111110011111100111111001111110011111100111111001111110011111100111111001111110011111100111111001111110011111100111111001111110011111100111111001111110011111101011110001111110011111100111111001111110011111100111111001111110011111100111111001111110011111100111111001111110011111100111111001111110011111100111111001111110011111100111111001111110011111100111111001111110011111100111111001111110011111100111111001111110011111100111111001111110011111100111111001111110011111100111111001111110011111100111111001111110011111100111111001111110011111100111111011001100011111100111111001111110011111100111111 3f3f3f3f3f3f3f3f3f3f3f3f3f3f3f3f3f3f3f3f3f3f3f3f3f3f3f3f3f3f3f3f3f3f5e3f3f3f3f3f3f3f3f3f3f3f3f3f3f3f3f3f3f3f3f3f3f3f3f3f3f3f3f3f3f3f3f3f5e3f3f3f3f3f3f3f3f3f3f3f3f3f3f3f3f3f3f3f3f3f3f3f3f3f3f3f3f3f3f3f3f3f3f3f3f3f3f3f3f3f3f3f3f3f3f3f3f663f3f3f3f3f3f3f3f3f3f3f3f3f3f3f3f3f3f3f3f3f3f3f3f3f3f3f3f3f3f3f3f3f3f5e3f3f3f3f3f3f3f3f3f3f3f3f3f3f3f3f3f3f3f3f3f3f3f3f3f3f3f3f3f3f3f3f3f5e3f3f3f3f3f3f3f3f3f3f3f3f3f3f3f3f3f3f3f3f3f3f3f3f3f3f3f3f4e3f3f3f3f3f3f3f3f3f3f3f3f3f3f3f3f3f3f3f3f3f3f3f3f3f3f3f3f3f3f3f3f5e3f3f3f3f3f3f3f3f3f3f3f3f3f3f3f3f3f3f3f3f3f3f3f3f3f3f3f3f3f3f3f3f3f5e3f3f3f3f3f3f3f3f3f3f3f3f3f3f3f3f3f3f3f3f3f3f3f3f3f3f3f3f3f3f3f3f3f3f3f3f3f3f3f3f3f3f3f3f3f3f3f3f663f3f3f3f3f
SJIS-WIN ????????????????髮ｫ?蠇ｶ?ｶ??｡?稲ч?ｽ隴??^???????????????髮ｫ?蠇ｶ?ｶ??｡?稲ч?ｽ隴??^??????????????????????????????髮ｫ?蠇ｶ?ｶ??｡?稲ч?ｽ隴??f????????????????髮ｫ?蠇ｶ?ｶ??｡?稲ч?ｽ隴??^???????????????髮ｫ?蠇ｶ?ｶ??｡?稲ч?ｽ隴??^????????????????????????????N??????????????髮ｫ?蠇ｶ?ｶ??｡?稲ч?ｽ隴??^???????????????髮ｫ?蠇ｶ?ｶ??｡?稲ч?ｽ隴??^??????????????????????????????髮ｫ?蠇ｶ?ｶ??｡?稲ч?ｽ隴??f????? 0011111100111111001111110011111100111111001111110011111100111111001111110011111100111111001111110011111100111111001111110011111111101001100110111010101100111111111110111010000110110110001111111011011000111111001111111010000100111111100010001110111010000100100010010011111110111101111010001010110100111111001111110101111000111111001111110011111100111111001111110011111100111111001111110011111100111111001111110011111100111111001111110011111111101001100110111010101100111111111110111010000110110110001111111011011000111111001111111010000100111111100010001110111010000100100010010011111110111101111010001010110100111111001111110101111000111111001111110011111100111111001111110011111100111111001111110011111100111111001111110011111100111111001111110011111100111111001111110011111100111111001111110011111100111111001111110011111100111111001111110011111100111111001111110011111111101001100110111010101100111111111110111010000110110110001111111011011000111111001111111010000100111111100010001110111010000100100010010011111110111101111010001010110100111111001111110110011000111111001111110011111100111111001111110011111100111111001111110011111100111111001111110011111100111111001111110011111100111111111010011001101110101011001111111111101110100001101101100011111110110110001111110011111110100001001111111000100011101110100001001000100100111111101111011110100010101101001111110011111101011110001111110011111100111111001111110011111100111111001111110011111100111111001111110011111100111111001111110011111100111111111010011001101110101011001111111111101110100001101101100011111110110110001111110011111110100001001111111000100011101110100001001000100100111111101111011110100010101101001111110011111101011110001111110011111100111111001111110011111100111111001111110011111100111111001111110011111100111111001111110011111100111111001111110011111100111111001111110011111100111111001111110011111100111111001111110011111100111111001111110100111000111111001111110011111100111111001111110011111100111111001111110011111100111111001111110011111100111111001111111110100110011011101010110011111111111011101000011011011000111111101101100011111100111111101000010011111110001000111011101000010010001001001111111011110111101000101011010011111100111111010111100011111100111111001111110011111100111111001111110011111100111111001111110011111100111111001111110011111100111111001111111110100110011011101010110011111111111011101000011011011000111111101101100011111100111111101000010011111110001000111011101000010010001001001111111011110111101000101011010011111100111111010111100011111100111111001111110011111100111111001111110011111100111111001111110011111100111111001111110011111100111111001111110011111100111111001111110011111100111111001111110011111100111111001111110011111100111111001111110011111100111111001111111110100110011011101010110011111111111011101000011011011000111111101101100011111100111111101000010011111110001000111011101000010010001001001111111011110111101000101011010011111100111111011001100011111100111111001111110011111100111111 3f3f3f3f3f3f3f3f3f3f3f3f3f3f3f3fe99bab3ffba1b63fb63f3fa13f88ee84893fbde8ad3f3f5e3f3f3f3f3f3f3f3f3f3f3f3f3f3f3fe99bab3ffba1b63fb63f3fa13f88ee84893fbde8ad3f3f5e3f3f3f3f3f3f3f3f3f3f3f3f3f3f3f3f3f3f3f3f3f3f3f3f3f3f3f3f3f3fe99bab3ffba1b63fb63f3fa13f88ee84893fbde8ad3f3f663f3f3f3f3f3f3f3f3f3f3f3f3f3f3f3fe99bab3ffba1b63fb63f3fa13f88ee84893fbde8ad3f3f5e3f3f3f3f3f3f3f3f3f3f3f3f3f3f3fe99bab3ffba1b63fb63f3fa13f88ee84893fbde8ad3f3f5e3f3f3f3f3f3f3f3f3f3f3f3f3f3f3f3f3f3f3f3f3f3f3f3f3f3f3f3f4e3f3f3f3f3f3f3f3f3f3f3f3f3f3fe99bab3ffba1b63fb63f3fa13f88ee84893fbde8ad3f3f5e3f3f3f3f3f3f3f3f3f3f3f3f3f3f3fe99bab3ffba1b63fb63f3fa13f88ee84893fbde8ad3f3f5e3f3f3f3f3f3f3f3f3f3f3f3f3f3f3f3f3f3f3f3f3f3f3f3f3f3f3f3f3f3fe99bab3ffba1b63fb63f3fa13f88ee84893fbde8ad3f3f663f3f3f3f3f
EUC-JP ????????????????髮ｫ??ｶ?ｶ??｡?稲ч?ｽ隴??^???????????????髮ｫ??ｶ?ｶ??｡?稲ч?ｽ隴??^??????????????????????????????髮ｫ??ｶ?ｶ??｡?稲ч?ｽ隴??f????????????????髮ｫ??ｶ?ｶ??｡?稲ч?ｽ隴??^???????????????髮ｫ??ｶ?ｶ??｡?稲ч?ｽ隴??^????????????????????????????N??????????????髮ｫ??ｶ?ｶ??｡?稲ч?ｽ隴??^???????????????髮ｫ??ｶ?ｶ??｡?稲ч?ｽ隴??^??????????????????????????????髮ｫ??ｶ?ｶ??｡?稲ч?ｽ隴??f????? 00111111001111110011111100111111001111110011111100111111001111110011111100111111001111110011111100111111001111110011111100111111111100011111101110001110101010110011111100111111100011101011011000111111100011101011011000111111001111111000111010100001001111111011000011110000101001111110100100111111100011101011110111110000101011110011111100111111010111100011111100111111001111110011111100111111001111110011111100111111001111110011111100111111001111110011111100111111001111111111000111111011100011101010101100111111001111111000111010110110001111111000111010110110001111110011111110001110101000010011111110110000111100001010011111101001001111111000111010111101111100001010111100111111001111110101111000111111001111110011111100111111001111110011111100111111001111110011111100111111001111110011111100111111001111110011111100111111001111110011111100111111001111110011111100111111001111110011111100111111001111110011111100111111001111110011111111110001111110111000111010101011001111110011111110001110101101100011111110001110101101100011111100111111100011101010000100111111101100001111000010100111111010010011111110001110101111011111000010101111001111110011111101100110001111110011111100111111001111110011111100111111001111110011111100111111001111110011111100111111001111110011111100111111001111111111000111111011100011101010101100111111001111111000111010110110001111111000111010110110001111110011111110001110101000010011111110110000111100001010011111101001001111111000111010111101111100001010111100111111001111110101111000111111001111110011111100111111001111110011111100111111001111110011111100111111001111110011111100111111001111110011111111110001111110111000111010101011001111110011111110001110101101100011111110001110101101100011111100111111100011101010000100111111101100001111000010100111111010010011111110001110101111011111000010101111001111110011111101011110001111110011111100111111001111110011111100111111001111110011111100111111001111110011111100111111001111110011111100111111001111110011111100111111001111110011111100111111001111110011111100111111001111110011111100111111001111110100111000111111001111110011111100111111001111110011111100111111001111110011111100111111001111110011111100111111001111111111000111111011100011101010101100111111001111111000111010110110001111111000111010110110001111110011111110001110101000010011111110110000111100001010011111101001001111111000111010111101111100001010111100111111001111110101111000111111001111110011111100111111001111110011111100111111001111110011111100111111001111110011111100111111001111110011111111110001111110111000111010101011001111110011111110001110101101100011111110001110101101100011111100111111100011101010000100111111101100001111000010100111111010010011111110001110101111011111000010101111001111110011111101011110001111110011111100111111001111110011111100111111001111110011111100111111001111110011111100111111001111110011111100111111001111110011111100111111001111110011111100111111001111110011111100111111001111110011111100111111001111110011111100111111111100011111101110001110101010110011111100111111100011101011011000111111100011101011011000111111001111111000111010100001001111111011000011110000101001111110100100111111100011101011110111110000101011110011111100111111011001100011111100111111001111110011111100111111 3f3f3f3f3f3f3f3f3f3f3f3f3f3f3f3ff1fb8eab3f3f8eb63f8eb63f3f8ea13fb0f0a7e93f8ebdf0af3f3f5e3f3f3f3f3f3f3f3f3f3f3f3f3f3f3ff1fb8eab3f3f8eb63f8eb63f3f8ea13fb0f0a7e93f8ebdf0af3f3f5e3f3f3f3f3f3f3f3f3f3f3f3f3f3f3f3f3f3f3f3f3f3f3f3f3f3f3f3f3f3ff1fb8eab3f3f8eb63f8eb63f3f8ea13fb0f0a7e93f8ebdf0af3f3f663f3f3f3f3f3f3f3f3f3f3f3f3f3f3f3ff1fb8eab3f3f8eb63f8eb63f3f8ea13fb0f0a7e93f8ebdf0af3f3f5e3f3f3f3f3f3f3f3f3f3f3f3f3f3f3ff1fb8eab3f3f8eb63f8eb63f3f8ea13fb0f0a7e93f8ebdf0af3f3f5e3f3f3f3f3f3f3f3f3f3f3f3f3f3f3f3f3f3f3f3f3f3f3f3f3f3f3f3f4e3f3f3f3f3f3f3f3f3f3f3f3f3f3ff1fb8eab3f3f8eb63f8eb63f3f8ea13fb0f0a7e93f8ebdf0af3f3f5e3f3f3f3f3f3f3f3f3f3f3f3f3f3f3ff1fb8eab3f3f8eb63f8eb63f3f8ea13fb0f0a7e93f8ebdf0af3f3f5e3f3f3f3f3f3f3f3f3f3f3f3f3f3f3f3f3f3f3f3f3f3f3f3f3f3f3f3f3f3ff1fb8eab3f3f8eb63f8eb63f3f8ea13fb0f0a7e93f8ebdf0af3f3f663f3f3f3f3f
UTF-8 ????????????????髮ｫ?蠇ｶ?ｶ??｡?稲ч?ｽ隴??^???????????????髮ｫ?蠇ｶ?ｶ??｡?稲ч?ｽ隴??^??????????????????????????????髮ｫ?蠇ｶ?ｶ??｡?稲ч?ｽ隴??f????????????????髮ｫ?蠇ｶ?ｶ??｡?稲ч?ｽ隴??^???????????????髮ｫ?蠇ｶ?ｶ??｡?稲ч?ｽ隴??^????????????????????????????N??????????????髮ｫ?蠇ｶ?ｶ??｡?稲ч?ｽ隴??^???????????????髮ｫ?蠇ｶ?ｶ??｡?稲ч?ｽ隴??^??????????????????????????????髮ｫ?蠇ｶ?ｶ??｡?稲ч?ｽ隴??f????? 001111110011111100111111001111110011111100111111001111110011111100111111001111110011111100111111001111110011111100111111001111111110100110101011101011101110111110111101101010110011111111101000101000001000011111101111101111011011011000111111111011111011110110110110001111110011111111101111101111011010000100111111111001111010100010110010110100011000011100111111111011111011110110111101111010011001101010110100001111110011111101011110001111110011111100111111001111110011111100111111001111110011111100111111001111110011111100111111001111110011111100111111111010011010101110101110111011111011110110101011001111111110100010100000100001111110111110111101101101100011111111101111101111011011011000111111001111111110111110111101101000010011111111100111101010001011001011010001100001110011111111101111101111011011110111101001100110101011010000111111001111110101111000111111001111110011111100111111001111110011111100111111001111110011111100111111001111110011111100111111001111110011111100111111001111110011111100111111001111110011111100111111001111110011111100111111001111110011111100111111001111110011111111101001101010111010111011101111101111011010101100111111111010001010000010000111111011111011110110110110001111111110111110111101101101100011111100111111111011111011110110100001001111111110011110101000101100101101000110000111001111111110111110111101101111011110100110011010101101000011111100111111011001100011111100111111001111110011111100111111001111110011111100111111001111110011111100111111001111110011111100111111001111110011111111101001101010111010111011101111101111011010101100111111111010001010000010000111111011111011110110110110001111111110111110111101101101100011111100111111111011111011110110100001001111111110011110101000101100101101000110000111001111111110111110111101101111011110100110011010101101000011111100111111010111100011111100111111001111110011111100111111001111110011111100111111001111110011111100111111001111110011111100111111001111111110100110101011101011101110111110111101101010110011111111101000101000001000011111101111101111011011011000111111111011111011110110110110001111110011111111101111101111011010000100111111111001111010100010110010110100011000011100111111111011111011110110111101111010011001101010110100001111110011111101011110001111110011111100111111001111110011111100111111001111110011111100111111001111110011111100111111001111110011111100111111001111110011111100111111001111110011111100111111001111110011111100111111001111110011111100111111001111110100111000111111001111110011111100111111001111110011111100111111001111110011111100111111001111110011111100111111001111111110100110101011101011101110111110111101101010110011111111101000101000001000011111101111101111011011011000111111111011111011110110110110001111110011111111101111101111011010000100111111111001111010100010110010110100011000011100111111111011111011110110111101111010011001101010110100001111110011111101011110001111110011111100111111001111110011111100111111001111110011111100111111001111110011111100111111001111110011111100111111111010011010101110101110111011111011110110101011001111111110100010100000100001111110111110111101101101100011111111101111101111011011011000111111001111111110111110111101101000010011111111100111101010001011001011010001100001110011111111101111101111011011110111101001100110101011010000111111001111110101111000111111001111110011111100111111001111110011111100111111001111110011111100111111001111110011111100111111001111110011111100111111001111110011111100111111001111110011111100111111001111110011111100111111001111110011111100111111001111110011111111101001101010111010111011101111101111011010101100111111111010001010000010000111111011111011110110110110001111111110111110111101101101100011111100111111111011111011110110100001001111111110011110101000101100101101000110000111001111111110111110111101101111011110100110011010101101000011111100111111011001100011111100111111001111110011111100111111 3f3f3f3f3f3f3f3f3f3f3f3f3f3f3f3fe9abaeefbdab3fe8a087efbdb63fefbdb63f3fefbda13fe7a8b2d1873fefbdbde99ab43f3f5e3f3f3f3f3f3f3f3f3f3f3f3f3f3f3fe9abaeefbdab3fe8a087efbdb63fefbdb63f3fefbda13fe7a8b2d1873fefbdbde99ab43f3f5e3f3f3f3f3f3f3f3f3f3f3f3f3f3f3f3f3f3f3f3f3f3f3f3f3f3f3f3f3f3fe9abaeefbdab3fe8a087efbdb63fefbdb63f3fefbda13fe7a8b2d1873fefbdbde99ab43f3f663f3f3f3f3f3f3f3f3f3f3f3f3f3f3f3fe9abaeefbdab3fe8a087efbdb63fefbdb63f3fefbda13fe7a8b2d1873fefbdbde99ab43f3f5e3f3f3f3f3f3f3f3f3f3f3f3f3f3f3fe9abaeefbdab3fe8a087efbdb63fefbdb63f3fefbda13fe7a8b2d1873fefbdbde99ab43f3f5e3f3f3f3f3f3f3f3f3f3f3f3f3f3f3f3f3f3f3f3f3f3f3f3f3f3f3f3f4e3f3f3f3f3f3f3f3f3f3f3f3f3f3fe9abaeefbdab3fe8a087efbdb63fefbdb63f3fefbda13fe7a8b2d1873fefbdbde99ab43f3f5e3f3f3f3f3f3f3f3f3f3f3f3f3f3f3fe9abaeefbdab3fe8a087efbdb63fefbdb63f3fefbda13fe7a8b2d1873fefbdbde99ab43f3f5e3f3f3f3f3f3f3f3f3f3f3f3f3f3f3f3f3f3f3f3f3f3f3f3f3f3f3f3f3f3fe9abaeefbdab3fe8a087efbdb63fefbdb63f3fefbda13fe7a8b2d1873fefbdbde99ab43f3f663f3f3f3f3f
UHC ????????????????髮???????????ч?????^???????????????髮???????????ч?????^??????????????????????????????髮???????????ч?????f????????????????髮???????????ч?????^???????????????髮???????????ч?????^????????????????????????????N??????????????髮???????????ч?????^???????????????髮???????????ч?????^??????????????????????????????髮???????????ч?????f????? 0011111100111111001111110011111100111111001111110011111100111111001111110011111100111111001111110011111100111111001111110011111111011011101001010011111100111111001111110011111100111111001111110011111100111111001111110011111100111111101011001110100100111111001111110011111100111111001111110101111000111111001111110011111100111111001111110011111100111111001111110011111100111111001111110011111100111111001111110011111111011011101001010011111100111111001111110011111100111111001111110011111100111111001111110011111100111111101011001110100100111111001111110011111100111111001111110101111000111111001111110011111100111111001111110011111100111111001111110011111100111111001111110011111100111111001111110011111100111111001111110011111100111111001111110011111100111111001111110011111100111111001111110011111100111111001111110011111111011011101001010011111100111111001111110011111100111111001111110011111100111111001111110011111100111111101011001110100100111111001111110011111100111111001111110110011000111111001111110011111100111111001111110011111100111111001111110011111100111111001111110011111100111111001111110011111100111111110110111010010100111111001111110011111100111111001111110011111100111111001111110011111100111111001111111010110011101001001111110011111100111111001111110011111101011110001111110011111100111111001111110011111100111111001111110011111100111111001111110011111100111111001111110011111100111111110110111010010100111111001111110011111100111111001111110011111100111111001111110011111100111111001111111010110011101001001111110011111100111111001111110011111101011110001111110011111100111111001111110011111100111111001111110011111100111111001111110011111100111111001111110011111100111111001111110011111100111111001111110011111100111111001111110011111100111111001111110011111100111111001111110100111000111111001111110011111100111111001111110011111100111111001111110011111100111111001111110011111100111111001111111101101110100101001111110011111100111111001111110011111100111111001111110011111100111111001111110011111110101100111010010011111100111111001111110011111100111111010111100011111100111111001111110011111100111111001111110011111100111111001111110011111100111111001111110011111100111111001111111101101110100101001111110011111100111111001111110011111100111111001111110011111100111111001111110011111110101100111010010011111100111111001111110011111100111111010111100011111100111111001111110011111100111111001111110011111100111111001111110011111100111111001111110011111100111111001111110011111100111111001111110011111100111111001111110011111100111111001111110011111100111111001111110011111100111111001111111101101110100101001111110011111100111111001111110011111100111111001111110011111100111111001111110011111110101100111010010011111100111111001111110011111100111111011001100011111100111111001111110011111100111111 3f3f3f3f3f3f3f3f3f3f3f3f3f3f3f3fdba53f3f3f3f3f3f3f3f3f3f3face93f3f3f3f3f5e3f3f3f3f3f3f3f3f3f3f3f3f3f3f3fdba53f3f3f3f3f3f3f3f3f3f3face93f3f3f3f3f5e3f3f3f3f3f3f3f3f3f3f3f3f3f3f3f3f3f3f3f3f3f3f3f3f3f3f3f3f3f3fdba53f3f3f3f3f3f3f3f3f3f3face93f3f3f3f3f663f3f3f3f3f3f3f3f3f3f3f3f3f3f3f3fdba53f3f3f3f3f3f3f3f3f3f3face93f3f3f3f3f5e3f3f3f3f3f3f3f3f3f3f3f3f3f3f3fdba53f3f3f3f3f3f3f3f3f3f3face93f3f3f3f3f5e3f3f3f3f3f3f3f3f3f3f3f3f3f3f3f3f3f3f3f3f3f3f3f3f3f3f3f3f4e3f3f3f3f3f3f3f3f3f3f3f3f3f3fdba53f3f3f3f3f3f3f3f3f3f3face93f3f3f3f3f5e3f3f3f3f3f3f3f3f3f3f3f3f3f3f3fdba53f3f3f3f3f3f3f3f3f3f3face93f3f3f3f3f5e3f3f3f3f3f3f3f3f3f3f3f3f3f3f3f3f3f3f3f3f3f3f3f3f3f3f3f3f3f3fdba53f3f3f3f3f3f3f3f3f3f3face93f3f3f3f3f663f3f3f3f3f

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。