ascii character set

Multinational Character Set

The Multinational Character Set is a character encoding created by Digital Equipment Corporation for use in the popular VT220 terminal. It was an 8-bit extension of ASCII that added accented characters, currency symbols, and other things missing from 7-bit ASCII. It is only one of the code pages implemented for the VT220 National Replacement Character Set.

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 both ISO 8859-1 and Unicode.

The code chart of MCS with 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 point Unicode mapping Character
A8 U+00A4 ¤
D7 U+0152 Œ
DD U+0178 Ÿ
F7 U+0153 œ
FD U+00FF ÿ

Codepage layout

In the following table, code points that differ from ISO 8859-1 are colored yellow.

DEC Multinational Character Set
x0x1x2x3x4x5x6x7x8x9xAxBxCxDxExF

0xcontrols
1x
2xSP!"#$%&'()*+,-./
3x 0 123456789:;<=>?
4x@ABCDEFGHIJKLMNO
5xPQRSTUVWXYZ[]^_
6x`abcdefghijklmno
7xpqrstuvwxyz{pipe (computing)}~ 
8xcontrols
9x

Ax   ¡ ¢ £   ¥   § ¤ © ª «  

Bx ° ± ² ³   µ ·   ¹ º » ¼ ½   ¿

CxÀÁÂÃÄÅÆÇÈÉÊËÌÍÎÏ
Dx ÑÒÓÔÕÖŒØÙÚÛÜŸ ß
Exàáâãäåæçèéêëìíîï
Fx ñòóôõöœøùúûüÿ 

References

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