Successful communication requires standardized data representation so that people and computers around the world can share the same information. Alphanumeric characters are represented by a seven-bit standard representation known as the American Standard Code for Information Interchange , or ASCII. ASCII also includes punctuation marks and invisible control codes used to help in the display and transfer of data. ASCII was first published in 1968 by the
American National Standards Institute , or ANSI. The original ASCII standard lacked provisions for many commonly used grammatical symbols in languages other than English. Since 1968, there have been many extensions to ASCII that have varying support throughout the world according to the prevalent language in each country. In the United States, an eight-bit ASCII variant is commonly supported that adds graphical symbols and some of the more common foreign language punctuation symbols. The original sevenbit ANSI standard ASCII mapping is shown in Table 5.1. The mappings below 0x20 are invisible control codes such as tab (0x09), carriage return (0x0D), and line-feed (0x0A). Some of the control codes are not in widespread use anymore.
American National Standards Institute , or ANSI. The original ASCII standard lacked provisions for many commonly used grammatical symbols in languages other than English. Since 1968, there have been many extensions to ASCII that have varying support throughout the world according to the prevalent language in each country. In the United States, an eight-bit ASCII variant is commonly supported that adds graphical symbols and some of the more common foreign language punctuation symbols. The original sevenbit ANSI standard ASCII mapping is shown in Table 5.1. The mappings below 0x20 are invisible control codes such as tab (0x09), carriage return (0x0D), and line-feed (0x0A). Some of the control codes are not in widespread use anymore.
