{"id":340,"date":"2020-12-02T19:21:51","date_gmt":"2020-12-03T00:21:51","guid":{"rendered":"https:\/\/www.alpharithms.com\/?p=340"},"modified":"2022-06-16T15:24:12","modified_gmt":"2022-06-16T19:24:12","slug":"ascii-table","status":"publish","type":"post","link":"https:\/\/www.alpharithms.com\/ascii-table-512119\/","title":{"rendered":"ASCII Table: Printable Reference & Guide"},"content":{"rendered":"\n
\"alpharithms<\/a>
Printable ASCII Table (Click to Enlarge)<\/figcaption><\/figure>\n

ASCII Table<\/h2>\n

The American Standard Code for Information Interchange (ASCII) is a means of encoding characters for digital communications. It was originally developed in the early 1960s as early networked communications were being developed.<\/p>\n

A 1969 RFC20<\/a> outlined the recommendation for adopting this 7-bit system for numerical representation<\/a> within network interchange. By the late 1980s, the American National Standards Institute (ANSI) had assumed oversight of the ASCII standard.<\/p>\n

Control Characters<\/h3>\n

Note the first 32 characters, decimal values 0-31, have been reserved for non-display characters. These are referred to as\u00a0control characters<\/em> and were originally intended as machine control signals to trigger events like system sounds (beep), network acknowledgments (ACK), and end of text (EOT).<\/p>\n

Printable Characters<\/h3>\n

The ASCII-encoded characters for decimal values 0-31 do not print or render to displays like other characters. As such, attempting to use these characters for non-control functions typically results in the display of a default missing character symbol or other unwanted (and irrelevant) characters.<\/p>\n

Modern Expanded ASCII<\/h3>\n

With the rise of 16, 32, and 64-bit machines, ASCII has seen several significant expansions over the years. The first expansion, called extended ASCII, used an 8-bit representation and extended to the range of 0-255. This range included common symbols and some internationalized versions of the American English alphabet.<\/p>\n

This expansion to the original ASCII character codes has evolved in response to the growing need for more sophisticated ways to represent language around the world. After all, we’re a ways past the Internet being limited to a few researchers sending messages around the Southern California area.<\/p>\n

ASCII Chart Uses<\/h2>\n

Today, ASCII is still used for certain internet mail protocols like SMTP<\/a> (7-bit ASCII) such that transmitted data is first encoded into 7-bit ASCII, send across the network, and then decoded by the receiving host. This works for all kinds of files, including media!<\/p>\n

Hexadecimal to ASCII<\/h3>\n

Hexadecimal can represent a wide range of values and is suited for use with modern 64-bit architectures. When converting hex to binary<\/a>, decimal, or even octal\u2014it can be convenient to have an easy reference to more commonly used values: like 5, 8, or 13. As such, ASCII number charts like the one here are often shown to include hexadecimal values.<\/p>\n

Modern Integrations<\/h3>\n

Basic text editors like Notepad++ create ASCII text and more advanced programs like Microsoft Word generally have a “save as text” option. In addition, other more advanced encoding sets like UTF and Unicode are considered “supersets” of ASCII and mirror the first 128 characters to the ASCII characters<\/a>. More than just a tribute; this mapping allows better compatibility across varying programs and programming languages. For example, Python’s ord() built-in function<\/a> will return the ASCII value of any value character.<\/p>\n","protected":false},"excerpt":{"rendered":"

ASCII Table The American Standard Code for Information Interchange (ASCII) is a means of encoding characters for digital communications. It was originally developed in the early 1960s as early networked communications were being developed. A 1969 RFC20 outlined the recommendation for adopting this 7-bit system for numerical representation within network interchange. By the late 1980s, […]<\/p>\n","protected":false},"author":2,"featured_media":355,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"inline_featured_image":false,"footnotes":""},"categories":[655,164],"tags":[166,123,165,168,167],"acf":[],"_links":{"self":[{"href":"https:\/\/www.alpharithms.com\/wp-json\/wp\/v2\/posts\/340"}],"collection":[{"href":"https:\/\/www.alpharithms.com\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.alpharithms.com\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.alpharithms.com\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/www.alpharithms.com\/wp-json\/wp\/v2\/comments?post=340"}],"version-history":[{"count":11,"href":"https:\/\/www.alpharithms.com\/wp-json\/wp\/v2\/posts\/340\/revisions"}],"predecessor-version":[{"id":2391,"href":"https:\/\/www.alpharithms.com\/wp-json\/wp\/v2\/posts\/340\/revisions\/2391"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.alpharithms.com\/wp-json\/wp\/v2\/media\/355"}],"wp:attachment":[{"href":"https:\/\/www.alpharithms.com\/wp-json\/wp\/v2\/media?parent=340"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.alpharithms.com\/wp-json\/wp\/v2\/categories?post=340"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.alpharithms.com\/wp-json\/wp\/v2\/tags?post=340"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}