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 ?????B??????B??B??????B???????B??????B??B??????B???????B??????B??B????????????B??????B?????????????????????????????????????????????????????T??B?????????B??????B??B??????B???????B??????B??B??????B???????B??????B??B????????????B??????B??B?????B???????N???B??????B??B??????B???????B??????B??B??????B???????B??????B??B????????????B??????B?????????????????????????????????????????????????????T??B????????? 00111111001111110011111100111111001111110100001000111111001111110011111100111111001111110011111101000010001111110011111101000010001111110011111100111111001111110011111100111111010000100011111100111111001111110011111100111111001111110011111101000010001111110011111100111111001111110011111100111111010000100011111100111111010000100011111100111111001111110011111100111111001111110100001000111111001111110011111100111111001111110011111100111111010000100011111100111111001111110011111100111111001111110100001000111111001111110100001000111111001111110011111100111111001111110011111100111111001111110011111100111111001111110011111101000010001111110011111100111111001111110011111100111111010000100011111100111111001111110011111100111111001111110011111100111111001111110011111100111111001111110011111100111111001111110011111100111111001111110011111100111111001111110011111100111111001111110011111100111111001111110011111100111111001111110011111100111111001111110011111100111111001111110011111100111111001111110011111100111111001111110011111100111111001111110011111100111111001111110011111100111111001111110011111100111111010101000011111100111111010000100011111100111111001111110011111100111111001111110011111100111111001111110100001000111111001111110011111100111111001111110011111101000010001111110011111101000010001111110011111100111111001111110011111100111111010000100011111100111111001111110011111100111111001111110011111101000010001111110011111100111111001111110011111100111111010000100011111100111111010000100011111100111111001111110011111100111111001111110100001000111111001111110011111100111111001111110011111100111111010000100011111100111111001111110011111100111111001111110100001000111111001111110100001000111111001111110011111100111111001111110011111100111111001111110011111100111111001111110011111101000010001111110011111100111111001111110011111100111111010000100011111100111111010000100011111100111111001111110011111100111111010000100011111100111111001111110011111100111111001111110011111101001110001111110011111100111111010000100011111100111111001111110011111100111111001111110100001000111111001111110100001000111111001111110011111100111111001111110011111101000010001111110011111100111111001111110011111100111111001111110100001000111111001111110011111100111111001111110011111101000010001111110011111101000010001111110011111100111111001111110011111100111111010000100011111100111111001111110011111100111111001111110011111101000010001111110011111100111111001111110011111100111111010000100011111100111111010000100011111100111111001111110011111100111111001111110011111100111111001111110011111100111111001111110100001000111111001111110011111100111111001111110011111101000010001111110011111100111111001111110011111100111111001111110011111100111111001111110011111100111111001111110011111100111111001111110011111100111111001111110011111100111111001111110011111100111111001111110011111100111111001111110011111100111111001111110011111100111111001111110011111100111111001111110011111100111111001111110011111100111111001111110011111100111111001111110011111100111111001111110011111100111111001111110011111101010100001111110011111101000010001111110011111100111111001111110011111100111111001111110011111100111111 3f3f3f3f3f423f3f3f3f3f3f423f3f423f3f3f3f3f3f423f3f3f3f3f3f3f423f3f3f3f3f3f423f3f423f3f3f3f3f3f423f3f3f3f3f3f3f423f3f3f3f3f3f423f3f423f3f3f3f3f3f3f3f3f3f3f3f423f3f3f3f3f3f423f3f3f3f3f3f3f3f3f3f3f3f3f3f3f3f3f3f3f3f3f3f3f3f3f3f3f3f3f3f3f3f3f3f3f3f3f3f3f3f3f3f3f3f3f3f3f3f3f3f3f3f3f543f3f423f3f3f3f3f3f3f3f3f423f3f3f3f3f3f423f3f423f3f3f3f3f3f423f3f3f3f3f3f3f423f3f3f3f3f3f423f3f423f3f3f3f3f3f423f3f3f3f3f3f3f423f3f3f3f3f3f423f3f423f3f3f3f3f3f3f3f3f3f3f3f423f3f3f3f3f3f423f3f423f3f3f3f3f423f3f3f3f3f3f3f4e3f3f3f423f3f3f3f3f3f423f3f423f3f3f3f3f3f423f3f3f3f3f3f3f423f3f3f3f3f3f423f3f423f3f3f3f3f3f423f3f3f3f3f3f3f423f3f3f3f3f3f423f3f423f3f3f3f3f3f3f3f3f3f3f3f423f3f3f3f3f3f423f3f3f3f3f3f3f3f3f3f3f3f3f3f3f3f3f3f3f3f3f3f3f3f3f3f3f3f3f3f3f3f3f3f3f3f3f3f3f3f3f3f3f3f3f3f3f3f3f3f3f3f3f543f3f423f3f3f3f3f3f3f3f3f
SJIS-WIN ?????B??????B??B??????B???????B??????B??B??????B???????B??????B??B????????????B??????B??????儼??????????余?????余???????儼????揖????????????????T??B?????????B??????B??B??????B???????B??????B??B??????B???????B??????B??B????????????B??????B??B?????B???????N???B??????B??B??????B???????B??????B??B??????B???????B??????B??B????????????B??????B??????儼??????????余?????余???????儼????揖????????????????T??B????????? 0011111100111111001111110011111100111111010000100011111100111111001111110011111100111111001111110100001000111111001111110100001000111111001111110011111100111111001111110011111101000010001111110011111100111111001111110011111100111111001111110100001000111111001111110011111100111111001111110011111101000010001111110011111101000010001111110011111100111111001111110011111100111111010000100011111100111111001111110011111100111111001111110011111101000010001111110011111100111111001111110011111100111111010000100011111100111111010000100011111100111111001111110011111100111111001111110011111100111111001111110011111100111111001111110100001000111111001111110011111100111111001111110011111101000010001111110011111100111111001111110011111100111111100110010101011000111111001111110011111100111111001111110011111100111111001111110011111100111111100101110101110100111111001111110011111100111111001111111001011101011101001111110011111100111111001111110011111100111111001111111001100101010110001111110011111100111111001111111001011101001011001111110011111100111111001111110011111100111111001111110011111100111111001111110011111100111111001111110011111100111111001111110101010000111111001111110100001000111111001111110011111100111111001111110011111100111111001111110011111101000010001111110011111100111111001111110011111100111111010000100011111100111111010000100011111100111111001111110011111100111111001111110100001000111111001111110011111100111111001111110011111100111111010000100011111100111111001111110011111100111111001111110100001000111111001111110100001000111111001111110011111100111111001111110011111101000010001111110011111100111111001111110011111100111111001111110100001000111111001111110011111100111111001111110011111101000010001111110011111101000010001111110011111100111111001111110011111100111111001111110011111100111111001111110011111100111111010000100011111100111111001111110011111100111111001111110100001000111111001111110100001000111111001111110011111100111111001111110100001000111111001111110011111100111111001111110011111100111111010011100011111100111111001111110100001000111111001111110011111100111111001111110011111101000010001111110011111101000010001111110011111100111111001111110011111100111111010000100011111100111111001111110011111100111111001111110011111101000010001111110011111100111111001111110011111100111111010000100011111100111111010000100011111100111111001111110011111100111111001111110100001000111111001111110011111100111111001111110011111100111111010000100011111100111111001111110011111100111111001111110100001000111111001111110100001000111111001111110011111100111111001111110011111100111111001111110011111100111111001111110011111101000010001111110011111100111111001111110011111100111111010000100011111100111111001111110011111100111111001111111001100101010110001111110011111100111111001111110011111100111111001111110011111100111111001111111001011101011101001111110011111100111111001111110011111110010111010111010011111100111111001111110011111100111111001111110011111110011001010101100011111100111111001111110011111110010111010010110011111100111111001111110011111100111111001111110011111100111111001111110011111100111111001111110011111100111111001111110011111101010100001111110011111101000010001111110011111100111111001111110011111100111111001111110011111100111111 3f3f3f3f3f423f3f3f3f3f3f423f3f423f3f3f3f3f3f423f3f3f3f3f3f3f423f3f3f3f3f3f423f3f423f3f3f3f3f3f423f3f3f3f3f3f3f423f3f3f3f3f3f423f3f423f3f3f3f3f3f3f3f3f3f3f3f423f3f3f3f3f3f423f3f3f3f3f3f99563f3f3f3f3f3f3f3f3f3f975d3f3f3f3f3f975d3f3f3f3f3f3f3f99563f3f3f3f974b3f3f3f3f3f3f3f3f3f3f3f3f3f3f3f3f543f3f423f3f3f3f3f3f3f3f3f423f3f3f3f3f3f423f3f423f3f3f3f3f3f423f3f3f3f3f3f3f423f3f3f3f3f3f423f3f423f3f3f3f3f3f423f3f3f3f3f3f3f423f3f3f3f3f3f423f3f423f3f3f3f3f3f3f3f3f3f3f3f423f3f3f3f3f3f423f3f423f3f3f3f3f423f3f3f3f3f3f3f4e3f3f3f423f3f3f3f3f3f423f3f423f3f3f3f3f3f423f3f3f3f3f3f3f423f3f3f3f3f3f423f3f423f3f3f3f3f3f423f3f3f3f3f3f3f423f3f3f3f3f3f423f3f423f3f3f3f3f3f3f3f3f3f3f3f423f3f3f3f3f3f423f3f3f3f3f3f99563f3f3f3f3f3f3f3f3f3f975d3f3f3f3f3f975d3f3f3f3f3f3f3f99563f3f3f3f974b3f3f3f3f3f3f3f3f3f3f3f3f3f3f3f3f543f3f423f3f3f3f3f3f3f3f3f
EUC-JP ?????B??????B??B??????B???????B??????B??B??????B???????B??????B??B????????????B??????B??????儼??????????余?????余???????儼????揖????????????????T??B?????????B??????B??B??????B???????B??????B??B??????B???????B??????B??B????????????B??????B??B?????B???????N???B??????B??B??????B???????B??????B??B??????B???????B??????B??B????????????B??????B??????儼??????????余?????余???????儼????揖????????????????T??B????????? 0011111100111111001111110011111100111111010000100011111100111111001111110011111100111111001111110100001000111111001111110100001000111111001111110011111100111111001111110011111101000010001111110011111100111111001111110011111100111111001111110100001000111111001111110011111100111111001111110011111101000010001111110011111101000010001111110011111100111111001111110011111100111111010000100011111100111111001111110011111100111111001111110011111101000010001111110011111100111111001111110011111100111111010000100011111100111111010000100011111100111111001111110011111100111111001111110011111100111111001111110011111100111111001111110100001000111111001111110011111100111111001111110011111101000010001111110011111100111111001111110011111100111111110100011011011100111111001111110011111100111111001111110011111100111111001111110011111100111111110011011011111000111111001111110011111100111111001111111100110110111110001111110011111100111111001111110011111100111111001111111101000110110111001111110011111100111111001111111100110110101100001111110011111100111111001111110011111100111111001111110011111100111111001111110011111100111111001111110011111100111111001111110101010000111111001111110100001000111111001111110011111100111111001111110011111100111111001111110011111101000010001111110011111100111111001111110011111100111111010000100011111100111111010000100011111100111111001111110011111100111111001111110100001000111111001111110011111100111111001111110011111100111111010000100011111100111111001111110011111100111111001111110100001000111111001111110100001000111111001111110011111100111111001111110011111101000010001111110011111100111111001111110011111100111111001111110100001000111111001111110011111100111111001111110011111101000010001111110011111101000010001111110011111100111111001111110011111100111111001111110011111100111111001111110011111100111111010000100011111100111111001111110011111100111111001111110100001000111111001111110100001000111111001111110011111100111111001111110100001000111111001111110011111100111111001111110011111100111111010011100011111100111111001111110100001000111111001111110011111100111111001111110011111101000010001111110011111101000010001111110011111100111111001111110011111100111111010000100011111100111111001111110011111100111111001111110011111101000010001111110011111100111111001111110011111100111111010000100011111100111111010000100011111100111111001111110011111100111111001111110100001000111111001111110011111100111111001111110011111100111111010000100011111100111111001111110011111100111111001111110100001000111111001111110100001000111111001111110011111100111111001111110011111100111111001111110011111100111111001111110011111101000010001111110011111100111111001111110011111100111111010000100011111100111111001111110011111100111111001111111101000110110111001111110011111100111111001111110011111100111111001111110011111100111111001111111100110110111110001111110011111100111111001111110011111111001101101111100011111100111111001111110011111100111111001111110011111111010001101101110011111100111111001111110011111111001101101011000011111100111111001111110011111100111111001111110011111100111111001111110011111100111111001111110011111100111111001111110011111101010100001111110011111101000010001111110011111100111111001111110011111100111111001111110011111100111111 3f3f3f3f3f423f3f3f3f3f3f423f3f423f3f3f3f3f3f423f3f3f3f3f3f3f423f3f3f3f3f3f423f3f423f3f3f3f3f3f423f3f3f3f3f3f3f423f3f3f3f3f3f423f3f423f3f3f3f3f3f3f3f3f3f3f3f423f3f3f3f3f3f423f3f3f3f3f3fd1b73f3f3f3f3f3f3f3f3f3fcdbe3f3f3f3f3fcdbe3f3f3f3f3f3f3fd1b73f3f3f3fcdac3f3f3f3f3f3f3f3f3f3f3f3f3f3f3f3f543f3f423f3f3f3f3f3f3f3f3f423f3f3f3f3f3f423f3f423f3f3f3f3f3f423f3f3f3f3f3f3f423f3f3f3f3f3f423f3f423f3f3f3f3f3f423f3f3f3f3f3f3f423f3f3f3f3f3f423f3f423f3f3f3f3f3f3f3f3f3f3f3f423f3f3f3f3f3f423f3f423f3f3f3f3f423f3f3f3f3f3f3f4e3f3f3f423f3f3f3f3f3f423f3f423f3f3f3f3f3f423f3f3f3f3f3f3f423f3f3f3f3f3f423f3f423f3f3f3f3f3f423f3f3f3f3f3f3f423f3f3f3f3f3f423f3f423f3f3f3f3f3f3f3f3f3f3f3f423f3f3f3f3f3f423f3f3f3f3f3fd1b73f3f3f3f3f3f3f3f3f3fcdbe3f3f3f3f3fcdbe3f3f3f3f3f3f3fd1b73f3f3f3fcdac3f3f3f3f3f3f3f3f3f3f3f3f3f3f3f3f543f3f423f3f3f3f3f3f3f3f3f
UTF-8 ?????B??????B??B??????B???????B??????B??B??????B???????B??????B??B????????????B??????B??????儼??닲???????余쒕????余쒖??????儼????揖ㆍ???????????????T??B?????????B??????B??B??????B???????B??????B??B??????B???????B??????B??B????????????B??????B??B?????B???????N???B??????B??B??????B???????B??????B??B??????B???????B??????B??B????????????B??????B??????儼??닲???????余쒕????余쒖??????儼????揖ㆍ???????????????T??B????????? 00111111001111110011111100111111001111110100001000111111001111110011111100111111001111110011111101000010001111110011111101000010001111110011111100111111001111110011111100111111010000100011111100111111001111110011111100111111001111110011111101000010001111110011111100111111001111110011111100111111010000100011111100111111010000100011111100111111001111110011111100111111001111110100001000111111001111110011111100111111001111110011111100111111010000100011111100111111001111110011111100111111001111110100001000111111001111110100001000111111001111110011111100111111001111110011111100111111001111110011111100111111001111110011111101000010001111110011111100111111001111110011111100111111010000100011111100111111001111110011111100111111001111111110010110000100101111000011111100111111111010111000101110110010001111110011111100111111001111110011111100111111001111111110010010111101100110011110110010010010100101010011111100111111001111110011111111100100101111011001100111101100100100101001011000111111001111110011111100111111001111110011111111100101100001001011110000111111001111110011111100111111111001101000111110010110111000111000011010001101001111110011111100111111001111110011111100111111001111110011111100111111001111110011111100111111001111110011111100111111010101000011111100111111010000100011111100111111001111110011111100111111001111110011111100111111001111110100001000111111001111110011111100111111001111110011111101000010001111110011111101000010001111110011111100111111001111110011111100111111010000100011111100111111001111110011111100111111001111110011111101000010001111110011111100111111001111110011111100111111010000100011111100111111010000100011111100111111001111110011111100111111001111110100001000111111001111110011111100111111001111110011111100111111010000100011111100111111001111110011111100111111001111110100001000111111001111110100001000111111001111110011111100111111001111110011111100111111001111110011111100111111001111110011111101000010001111110011111100111111001111110011111100111111010000100011111100111111010000100011111100111111001111110011111100111111010000100011111100111111001111110011111100111111001111110011111101001110001111110011111100111111010000100011111100111111001111110011111100111111001111110100001000111111001111110100001000111111001111110011111100111111001111110011111101000010001111110011111100111111001111110011111100111111001111110100001000111111001111110011111100111111001111110011111101000010001111110011111101000010001111110011111100111111001111110011111100111111010000100011111100111111001111110011111100111111001111110011111101000010001111110011111100111111001111110011111100111111010000100011111100111111010000100011111100111111001111110011111100111111001111110011111100111111001111110011111100111111001111110100001000111111001111110011111100111111001111110011111101000010001111110011111100111111001111110011111100111111111001011000010010111100001111110011111111101011100010111011001000111111001111110011111100111111001111110011111100111111111001001011110110011001111011001001001010010101001111110011111100111111001111111110010010111101100110011110110010010010100101100011111100111111001111110011111100111111001111111110010110000100101111000011111100111111001111110011111111100110100011111001011011100011100001101000110100111111001111110011111100111111001111110011111100111111001111110011111100111111001111110011111100111111001111110011111101010100001111110011111101000010001111110011111100111111001111110011111100111111001111110011111100111111 3f3f3f3f3f423f3f3f3f3f3f423f3f423f3f3f3f3f3f423f3f3f3f3f3f3f423f3f3f3f3f3f423f3f423f3f3f3f3f3f423f3f3f3f3f3f3f423f3f3f3f3f3f423f3f423f3f3f3f3f3f3f3f3f3f3f3f423f3f3f3f3f3f423f3f3f3f3f3fe584bc3f3feb8bb23f3f3f3f3f3f3fe4bd99ec92953f3f3f3fe4bd99ec92963f3f3f3f3f3fe584bc3f3f3f3fe68f96e3868d3f3f3f3f3f3f3f3f3f3f3f3f3f3f3f543f3f423f3f3f3f3f3f3f3f3f423f3f3f3f3f3f423f3f423f3f3f3f3f3f423f3f3f3f3f3f3f423f3f3f3f3f3f423f3f423f3f3f3f3f3f423f3f3f3f3f3f3f423f3f3f3f3f3f423f3f423f3f3f3f3f3f3f3f3f3f3f3f423f3f3f3f3f3f423f3f423f3f3f3f3f423f3f3f3f3f3f3f4e3f3f3f423f3f3f3f3f3f423f3f423f3f3f3f3f3f423f3f3f3f3f3f3f423f3f3f3f3f3f423f3f423f3f3f3f3f3f423f3f3f3f3f3f3f423f3f3f3f3f3f423f3f423f3f3f3f3f3f3f3f3f3f3f3f423f3f3f3f3f3f423f3f3f3f3f3fe584bc3f3feb8bb23f3f3f3f3f3f3fe4bd99ec92953f3f3f3fe4bd99ec92963f3f3f3f3f3fe584bc3f3f3f3fe68f96e3868d3f3f3f3f3f3f3f3f3f3f3f3f3f3f3f543f3f423f3f3f3f3f3f3f3f3f
UHC ?????B??????B??B??????B???????B??????B??B??????B???????B??????B??B????????????B??????B??????儼??닲???????余쒕????余쒖??????儼????揖ㆍ???????????????T??B?????????B??????B??B??????B???????B??????B??B??????B???????B??????B??B????????????B??????B??B?????B???????N???B??????B??B??????B???????B??????B??B??????B???????B??????B??B????????????B??????B??????儼??닲???????余쒕????余쒖??????儼????揖ㆍ???????????????T??B????????? 00111111001111110011111100111111001111110100001000111111001111110011111100111111001111110011111101000010001111110011111101000010001111110011111100111111001111110011111100111111010000100011111100111111001111110011111100111111001111110011111101000010001111110011111100111111001111110011111100111111010000100011111100111111010000100011111100111111001111110011111100111111001111110100001000111111001111110011111100111111001111110011111100111111010000100011111100111111001111110011111100111111001111110100001000111111001111110100001000111111001111110011111100111111001111110011111100111111001111110011111100111111001111110011111101000010001111110011111100111111001111110011111100111111010000100011111100111111001111110011111100111111001111111110010111110000001111110011111110001000101010000011111100111111001111110011111100111111001111110011111111100101111110011001110011101011001111110011111100111111001111111110010111111001100111001110110000111111001111110011111100111111001111110011111111100101111100000011111100111111001111110011111111101011111001111010010011111101001111110011111100111111001111110011111100111111001111110011111100111111001111110011111100111111001111110011111100111111010101000011111100111111010000100011111100111111001111110011111100111111001111110011111100111111001111110100001000111111001111110011111100111111001111110011111101000010001111110011111101000010001111110011111100111111001111110011111100111111010000100011111100111111001111110011111100111111001111110011111101000010001111110011111100111111001111110011111100111111010000100011111100111111010000100011111100111111001111110011111100111111001111110100001000111111001111110011111100111111001111110011111100111111010000100011111100111111001111110011111100111111001111110100001000111111001111110100001000111111001111110011111100111111001111110011111100111111001111110011111100111111001111110011111101000010001111110011111100111111001111110011111100111111010000100011111100111111010000100011111100111111001111110011111100111111010000100011111100111111001111110011111100111111001111110011111101001110001111110011111100111111010000100011111100111111001111110011111100111111001111110100001000111111001111110100001000111111001111110011111100111111001111110011111101000010001111110011111100111111001111110011111100111111001111110100001000111111001111110011111100111111001111110011111101000010001111110011111101000010001111110011111100111111001111110011111100111111010000100011111100111111001111110011111100111111001111110011111101000010001111110011111100111111001111110011111100111111010000100011111100111111010000100011111100111111001111110011111100111111001111110011111100111111001111110011111100111111001111110100001000111111001111110011111100111111001111110011111101000010001111110011111100111111001111110011111100111111111001011111000000111111001111111000100010101000001111110011111100111111001111110011111100111111001111111110010111111001100111001110101100111111001111110011111100111111111001011111100110011100111011000011111100111111001111110011111100111111001111111110010111110000001111110011111100111111001111111110101111100111101001001111110100111111001111110011111100111111001111110011111100111111001111110011111100111111001111110011111100111111001111110011111101010100001111110011111101000010001111110011111100111111001111110011111100111111001111110011111100111111 3f3f3f3f3f423f3f3f3f3f3f423f3f423f3f3f3f3f3f423f3f3f3f3f3f3f423f3f3f3f3f3f423f3f423f3f3f3f3f3f423f3f3f3f3f3f3f423f3f3f3f3f3f423f3f423f3f3f3f3f3f3f3f3f3f3f3f423f3f3f3f3f3f423f3f3f3f3f3fe5f03f3f88a83f3f3f3f3f3f3fe5f99ceb3f3f3f3fe5f99cec3f3f3f3f3f3fe5f03f3f3f3febe7a4fd3f3f3f3f3f3f3f3f3f3f3f3f3f3f3f543f3f423f3f3f3f3f3f3f3f3f423f3f3f3f3f3f423f3f423f3f3f3f3f3f423f3f3f3f3f3f3f423f3f3f3f3f3f423f3f423f3f3f3f3f3f423f3f3f3f3f3f3f423f3f3f3f3f3f423f3f423f3f3f3f3f3f3f3f3f3f3f3f423f3f3f3f3f3f423f3f423f3f3f3f3f423f3f3f3f3f3f3f4e3f3f3f423f3f3f3f3f3f423f3f423f3f3f3f3f3f423f3f3f3f3f3f3f423f3f3f3f3f3f423f3f423f3f3f3f3f3f423f3f3f3f3f3f3f423f3f3f3f3f3f423f3f423f3f3f3f3f3f3f3f3f3f3f3f423f3f3f3f3f3f423f3f3f3f3f3fe5f03f3f88a83f3f3f3f3f3f3fe5f99ceb3f3f3f3fe5f99cec3f3f3f3f3f3fe5f03f3f3f3febe7a4fd3f3f3f3f3f3f3f3f3f3f3f3f3f3f3f543f3f423f3f3f3f3f3f3f3f3f

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。