What is ascii code in computer

What is ASCII code

ASCII (AmericanStandardCodeforInformationInterchange): The American Standard Code for Information Interchange is a system of computer coding based on the Latin alphabet that is used primarily to display modern English and other Western European languages. It is the most common standard for information exchange and is equivalent to the international standard ISO/IEC646.

ascii code is short for American Standard Code for Information Interchange. Information is represented in binary on computers, and this representation makes it difficult for people to understand, so computers are equipped with input and output devices, the main purpose of which is to display information on these devices in a human-readable form that can be read and understood by humans.

ASCII ((American Standard Code for Information Interchange): American Standard Code for Information Interchange) is a computer coding system based on the Latin alphabet that is used primarily for displaying modern English and other Western European languages. It is the most common standard for information exchange and is equivalent to the international standard ISO/IEC 646.

Standard ASCII, also known as base ASCII, uses seven binary digits to represent all upper- and lower-case letters, the digits 0 through punctuation, and special control characters used in American English.

Each letter of the alphabet has a specific ASCII code that corresponds to it. For example, the letter A, with an ASCII value of 65, converted to binary is 01000001.

What does ascii code mean

What does ascii code mean

ASCII ((AmericanStandardCodeforInformationInterchange): American Standard Code for Information Interchange) is a system of computer coding based on the Latin alphabet that is primarily used to display modern English and other Western European languages.

It is the most common standard for information exchange, and is equivalent to the international standard ISO/IEC646.ASCII was first published as a standard in 1967, and last updated in 1986, with 128 characters defined to date.

The American Standard Code for Information Interchange (ASCII) was developed by the American National Standards Institute (AmericanNationalStandardInstitute,ANSI) as a standard single-byte character encoding scheme for text-based data.

It was initially the American National Standard for different computers to communicate with each other as a common compliance with the Western character encoding standard, which was later set as an international standard by the International Organization for Standardization (International Organization for Standardization, ISO) as the ISO646 standard. It applies to all Latin character alphabets.

GB18030 coding standard

The national standard GB18030-2000 “Supplement to the Basic Set of Character Sets of Chinese Characters Coded for Information Exchange” is the most important Chinese character coding standard in China after GB2312-1980 and GB13000-1993, and it is one of the basic standards that our computer system It is one of the basic standards that must be followed by China’s computer system.

GB18030-2000 was jointly issued by the Ministry of Information Industry and the State Bureau of Quality and Technical Supervision on March 17, 2000, and will be enforced in January 2001 as a national standard.

GB18030-2005 “Information Technology Chinese Coded Character Set” is a mandatory standard for a large Chinese coded character set with Chinese characters as the main characters and a variety of ethnic minority characters (e.g., Tibetan, Mongolian, Dai, Yi, Korean, Uyghur, etc.), which includes more than 70,000 Chinese characters.

What does computer ascii mean

What is ascii code, what is called ascii

What is ascii code, what is called ascii code ASCII code in English full name AmericaStandardCodeforInformaTIonInterchange, the Chinese meaning: U.S. Information Exchange ASCII code in English is known as AmericaStandardCodeforInformaTIonInterchange. It has been designated as an international standard by the International Organization for Standardization (ISO), called ISO646 standard. Applicable to all Latin characters, ASCII has two forms: 7-bit code and 8-bit code.ASCII was introduced in 1968 to standardize data transmission among different computer hardware and software systems, and is used in most minicomputers and all personal computers.ASCII is divided into two sets: the standard ASCII code of 128 characters and the additional ASCII code of 128 characters and the expanded ASCII code of 128 characters. ASCII is divided into two sets: the standard 128-character ASCII code and the additional 128-character expanded and ASCII code.  Because a 1-bit binary number can represent (21=) 2 states: 0, 1; and a 2-bit binary number can represent (22) = 4 states: 00, 01, 10, 11; and so on, a 7-bit binary number can represent (27=) 128 states, each of which is uniquely coded as a 7-bit binary code corresponding to a character (or control code), and these codes can be arranged as a decimal serial number 0 to 127. so, the 7-bit ASCII code is encoded with a seven-bit binary number and can represent 128 characters.  No. 0 to 32 and No. 127 (a total of 34) are control characters or communication-specific characters, such as control characters: LF (line feed), CR (Carriage Return), FF (Page Feed), DEL (Delete), BEL (Ringing), etc.; communication-specific characters: SOH (text header), EOT (end of the text), ACK (acknowledgement), etc.; No. 33 to 126 (a total of 94) is a character, which is 48 to 57 for 0 to 9 ten characters. No. 57 are the ten Arabic numerals from 0 to 9; No. 65 to 90 are the 26 uppercase letters of the alphabet, No. 97 to 122 are the 26 lowercase letters of the alphabet, and the rest are

Some punctuation marks, arithmetic

What is ASCII code?

ASCII code, No. 0 to 32 and No. 127 is the control character, commonly used LF (line feed), CR (Carriage Return); No. 33 to 126 is the character, of which No. 48 to 57 for the 0-9 ten Arabic numerals; No. 65 to 90 for the 26 uppercase letters of the English alphabet, No. 97 to 122 for the 26 lower-case letters of the English alphabet, and the rest of some punctuation marks The rest are some punctuation marks, arithmetic symbols and so on.

In the computer, only binary data storage, which is determined by the storage medium, in the data storage and reading, only for the binary way, and in order to more intuitive and easy to represent a number, the use of octal, hexadecimal way to represent the data (relative to the binary system, octal and hexadecimal is more brief).

Size rules

Common ASCII size rules: 0~9<A~Z<a~z.

1, the numbers are smaller than the letters. Such as “7” < “F”.

2, the number 0 is smaller than the number 9, and in increasing order from 0 to 9. Such as “3”< “8”.

3, the letter A is smaller than the letter Z, and in increasing order from A to Z. The letter “A” is smaller than the letter “Z”. For example, “A”< “Z”.

4. The same letter in upper case is smaller than the letter in lower case by 32. e.g. “A”< “a”.

The ASCII size of several common letters: “A” is 65; “a” is 97; and “0” is 48.