VISCII

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VISCII ( Vietnamese Standard Code for Information Interchange ) is an 8-bit character encoding and is described in RFC 1456 . It covers the spelling of the Vietnamese language .

Since this orthography uses a total of 134 characters in addition to the ASCII characters, a simple extension of the ASCII character set to 8-bit is not possible. VISCII solves this problem by replacing the six rarest control characters in the ASCII area with the six rarest Vietnamese characters. Although this method can be used to encode the language itself, there is no room for additional punctuation or currency symbols.

Today the character set has been replaced by UTF-8 .

The following table shows the repertoire of VISCII:

code … 0 …1 … 2 … 3 … 4 … 5 … 6 … 7 …8th … 9 … A … B ... C … D … E ... F
0 ... NUL SOH Ẳ ETX EOT Ẵ Ẫ BEL BS HT LF VT FF CR SO SI
1… DLE DC1 DC2 DC3 Ỷ NAK SYN ETB CAN Ỹ SUB ESC FS GS Ỵ US
2… SP ! " # $ % & ' ( ) * + , - . /
3… 0 1 2 3 4th 5 6th 7th 8th 9 : ; < = > ?
4… @ A. B. C. D. E. F. G H I. J K L. M. N O
5… P Q R. S. T U V W. X Y Z [ \ ] ^ _
6… ` a b c d e f G H i j k l m n O
7… p q r s t u v w x y z { | } ~ DEL
8th… Ạ Ắ Ằ Ặ Ấ Ầ Ẩ Ậ Ẽ Ẹ Ế Ề Ể Ễ Ệ O
9 ... O O O O O O O O Ị O O Ỉ Ủ Ũ Ụ Ỳ
A ... O ắ ằ ặ ấ ầ ẩ ậ ẽ ẹ ế ề ể ễ ệ O
B ... O O O O O O O O ị Ự Ứ Ừ Ử O O Ư
C ... À Á Â Ã Ả Ă ẳ ẵ È É Ê Ẻ Ì Í Ĩ ỳ
D ... Đ ứ O O O ạ ỷ ừ ử Ù Ú ỹ ỵ Ý O ư
E ... à á â ã ả ă ữ ẫ è é ê ẻ ì í ĩ ỉ
F ... đ ự O O O O O O ụ ù ú ũ ủ ý O Ữ