 Invariant subset of NRCS. Red Bowen knots (⌘) denote national code points. | |
| Alias(es) | National Replacement Character Set |
|---|---|
| Preceded by | ASCII |
| Succeeded by | ISO 8859, ISO 10646 |
| Other related encoding(s) | ISO 646 |
The National Replacement Character Set (NRCS) was a feature supported by later models of Digital's (DEC) computer terminal systems, starting with the VT200 series in 1983. NRCS allowed individual characters from one character set to be replaced by one from another set, allowing the construction of different character sets on the fly. It was used to customize the character set to different local languages, without having to change the terminal's ROM for different countries, or alternately, include many different sets in a larger ROM. Many 3rd party terminals and terminal emulators supporting VT200 codes also supported NRCS.