ASCII full form (American Standard Code for Information Interchange) is the most common character encoding format for text data on computers and the Internet. Data encoded in standard ASCII has an additional 128 alphabetic, numeric, or special characters and unique values ​​for control codes.

Before ASCII was developed, computers of different makes and models could not communicate with each other. Each computer manufacturer represented alphabets, numbers, and other characters in their way. Only IBM (International Business Machines Corporation) used nine different character sets. In 1961, IBM’s Bob Bemer submitted a proposal to the American National Standards Institute (ANSI) for a standard computer code. The X3.4 committee was formed with representatives from the central computer manufacturers of the day to work on the new code.

On June 17, 1963, ASCII was ratified as the American standard. However, it was not widely accepted, mainly because IBM chose to use the EBCDIC (Extended Binary Code Decimal Interchange Code) in its OS/360 series computers released in 1964. However, ASCII was further developed and published. Revisions in 1965 and 1967. Press. Lyndon B. Johnson directed that ASCII be named a federal standard to minimize the mismatch between national computer and telecommunications systems. He also mandated that all new computers and related equipment purchased by the US government on or after July 1, 1969, be ASCII compliant. The code was revised again in 1968, 1977, and 1986.

What is the whole method of ASCII?

ASCII Full Form

ASCII stands for American Standard Code for Information Interchange. It is a set of character identification methods for computer encoding text documents. ASCII codes represent computers and other communication devices that use text. It was the most common computer encoding on the World Wide Web until December 2007, then surpassed UTF-8, which uses ASCII as a subset.


ASCII was first adopted in 1963. It became viral quickly and became widely used in the computing world. And also, It was first used commercially as a seven-bit teleprinter code introduced by Bell Data Services.

It was initially based on the English alphabet. Encodes 128 specified characters into a seven-bit binary integer. It was originally a 6-bit character set but later became a 7-bit character set.


Most computers use ASCII code to represent text. It makes it possible to transfer data from one computer to another computer. ASCII text files are used in DOS and UNIX-based operating systems. Text editors and word processors can store data in ASCII format, but this is not a default storage format.

The future of ASCII

ASCII texts are not the best character encoding sets. Therefore, it is currently being superseded by Unicode character sets. In addition, only DOS and UNIX-based operating systems use ASCII, while the Windows operating system uses the newer Unicode.

ASCIIbetical order

ASCII code follows an order known as ASCIIbetical order; in this order, all the characters are represented with an integer value. In this order, digits, punctuations, and textures come first, then the Uppercase and lower-case characters.

Use of ASCII code


  • They were used for text encoding.
  • Unix and Linux use ASCII for showing text characters.
  • Word processors and editors can store data in ASCII format.

ASCII Highlights

ASCII American Standard Code for Information Interchange
Formed by American Standard Association or X3 committee
Based on English Characters
World Wide Web Use ASCII till 2007, now www use UTF-8 for character encoding
Father of ASCII Bemer–Ross
Used for Encoding English character


code, a hard-and-fast rule in communication for replacing a piece of information, such as a letter, word, or phrase, with an arbitrarily chosen equivalent. The term is often misused and is used as a synonym for encryption, a method of converting a message to obscure its meaning. In the past, this blurring of the distinction between code and password was reasonably trivial; many historical ciphers might have been more appropriately classified as codes by today’s criteria.

In modern communication systems, information is often scramble and encrypted (or encrypt), so it is vital to understand the difference between the two. Codes and certain ciphers (substitution ciphers) replace elements of a message with other symbols; however, unlike codes, ciphers do so according to a rule define by a secret key that conveys only information and known to the intend recipient. Without this private key, a third party cannot reverse the modification to decrypt it.

How ASCII works

In digital computers, binary code is arrange in a group of eight. This group of eight bits is call a byte. The ASCII code is embed in an eight-bit field that contains seven information bits (seven combinations of 0s and 1s) and a parity bit to check for errors or special symbols.

Each English alphabet is represent by a sequence of eight 0’s and 1’s. Each computer contains eight bits of code, but with a seven bit ASCII code, one bit remains blank. However, as the code progressed, the eighth bit was use. And also, IBM introduced Extended ASCII code and increased the character limit from 128 to 256 characters.

Advantages and disadvantages of ASCII

After a clear understanding of ASCII, let’s find out what are the advantages and disadvantages of ASCII and extended ASCII code.

Advantages of ASCII

  1. Less memory usage due to limited characters
  2. ASCII is recognize by all computers
  3. Can represent multiple languages ​​other than English

Disadvantages of ASCII

  1. ASCII cannot support more than 256 characters
  2. ASCII, Chinese, Japanese, etc. It does not support languages ​​with more alphabets, such as

unique code

Unicode is an international character encoding system designed to support the electronic interchange, processing, and display of texts written in various languages ​​of the modern and classical world. The Unicode standard includes letters, numbers, diacritics, punctuation, technical symbols, emoji, and other symbols for all of the world’s major written languages ​​using a uniform encoding scheme. Therefore, Unicode Consortium maintains the standard. The first version of Unicode was introduce in 1991; The latest version contains more than 100,000 characters. And also, Many encoding systems (including ASCII) predate Unicode. With Unicode (unlike previous systems), the unique number provided for each character remains the same on any Unicode-compliant system.

Frequently asked questions (FAQ)

These are some of the most frequently ask questions  ASCII form.

American Standard Code for Information Interchange (ASCII) is an alphanumeric code representing numbers, English alphabets, symbols, punctuation, memorable characters, and control characters.

How many characters are there in ASCII?

ASCII has 128 characters, and extended ASCII has 256 characters.

What is the exact format of the ASCII code?

The complete form of the ASCII code is the American Standard Code for Information Interchange.

What is the use of ASCII?

ASCII code is use to encode text documents on a computer. Its code is use by computers as a standard data transmission code. And also, Each alphanumeric character is assign a seven-digit code.

Therefore, Stay tuned to for the latest ASCII news and updates. We will continue to update this page regularly so you can stay up to date with the latest information.


ASCII: abbreviated from American Standard Code for Information Interchange, is a character encoding standard for electronic communication. ASCII codes . (American Standard Code for Information Interchange) is the most common character encoding format for text data in computers and on the internet. ASCII was develop from telegraph code. Its first commercial use was as a seven-bit teleprinter code promoted by Bell data services. Work on the ASCII standard began in May 1961, with the first meeting of the American Standards Association’s (ASA) (now the American National Standards Institute or ANSI) X3.2 subcommittee. The first edition of the standard was published in 1963, underwent a major revision during 1967,and experienced its most recent update during 1986 Compared to earlier telegraph codes, the proposed Bell code and ASCII were both ordered for more convenient sorting (i.e., alphabetization) of lists and added features for devices other than teleprinters

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