DEC Special Graphics explained

Alias:	IBM-1090
Basedon:	ASCII

DEC Special Graphics is a 7-bit character set developed by Digital Equipment Corporation. This was used very often to draw boxes on the VT100 video terminal and the many emulators, and used by bulletin board software. The designation escape sequence (hexadecimal) switched the codes for lower-case ASCII letters to draw this set, and the sequence (hexadecimal) switched back.^[1] IBM calls it Code page 1090.

See also

• Box-drawing character
• DEC Multinational Character Set (MCS)
• DEC National Replacement Character Set (NRCS)
• DEC Technical Character Set
• DEC VT100

External links

• Video of real VT100 and animation made with DEC Special Graphics

Notes and References

1. Web site: About the 'alternate linedrawing character set' . Mascheck . Sven . Le Breton . Stefan . Hamilton . Richard L. . ~sven_mascheck/.