Codes and Symbols Standards

American Standard Code for Information Interchange, first published in 1963 and refined in 1968, assigned 7 bit codes to 128...

The ITU recommendation organizing the international public telephone numbering plan, first published in 1988 and absorbing the...

The retail barcodes first scanned on a pack of Wrigley gum in Troy, Ohio in June 1974. The Universal Product Code was chosen by...

International Standard Book Numbers, standardized as ISO 2108 in 1970, uniquely identify books and editions. The system moved...

Country and subdivision codes, from FR for France to JP for Japan, first published in 1974. The alpha 2 codes underpin internet...

Three letter currency codes such as USD, EUR and JPY, standardized since 1978. They define minor units, so most currencies carry...

Language codes, from the two letter set 1 codes like en and fr to the three letter sets covering more than seven thousand...

The international date and time notation standard, best known for YYYY-MM-DD ordering that sorts correctly. The 2019 edition...

The Universal Coded Character Set, first published in 1993, assigns unique numbers to characters of all scripts, now more than...

The eight digit International Standard Serial Number identifies newspapers, magazines and journals, administered from Paris since...

The dot and dash telegraph code standardized internationally in 1865, descending from the system Samuel Morse used for the 1844...

Quick Response codes were invented in 1994 by Masahiro Hara at Denso Wave to track car parts, then released essentially royalty...

The variable length Unicode encoding designed by Ken Thompson and Rob Pike in September 1992 and first presented at USENIX in...