The Multinational Character Set (DMCS or MCS) is a character encoding created in 1983 by Digital Equipment Corporation (DEC) for use in the popular VT220 terminal. It was an 8-bit extension of ASCII that added accented characters, currency symbols, and other character glyphs missing from 7-bit ASCII. It is only one of the code pages implemented for the VT220 National Replacement Character Set (NRCS). MCS is registered as IBM code page/CCSID 1100 (Multinational Emulation) since 1992. Depending on associated sorting Oracle calls it WE8DEC, N8DEC, DK8DEC, S8DEC, or SF8DEC.

Such "extended ASCII" sets were common (the National Replacement Character Set provided sets for more than a dozen European languages), but MCS has the distinction of being the ancestor of ECMA-94 in 1985 and ISO 8859-1 in 1987.

The code chart of MCS with ECMA-94, ISO 8859-1 and the first 256 code points of Unicode have many more similarities than differences. In addition to unused code points, differences from ISO 8859-1 are:

MCS code pointUnicode mappingCharacter
0xA8U+00A4¤
0xD7U+0152Œ
0xDDU+0178Ÿ
0xF7U+0153œ
0xFDU+00FFÿ

Character set

DEC Multinational Character Set
0123456789ABCDEF
0_NULSOHSTXETXEOTENQACKBELBSHTLFVTFFCRSOSI
1_DLEDC1DC2DC3DC4NAKSYNETBCANEMSUBESCFSGSRSUS
2_SP!"#$%&'()*+,-./
3_0123456789:;<=>?
4_@ABCDEFGHIJKLMNO
5_PQRSTUVWXYZ[\]^_
6_`abcdefghijklmno
7_pqrstuvwxyz{|}~DEL
8_INDNELSSAESAHTSHTJVTSPLDPLURISS2SS3
9_DCSPU1PU2STSCCHMWSPAEPACSISTOSCPMAPC
A_¡¢£¥§¤00A4©ª«
B_°±²³µ·¹º»¼½¿
C_ÀÁÂÃÄÅÆÇÈÉÊËÌÍÎÏ
D_ÑÒÓÔÕÖŒ0152ØÙÚÛÜŸ0178ß
E_àáâãäåæçèéêëìíîï
F_ñòóôõöœ0153øùúûüÿ00FF

See also