What is the most widely adopted encoding inside a computer?

At present, the most widely used character set and its encoding in computers is the American Standard Code for Information Interchange (ASCII code) developed by the American National Bureau of Standards (ANSI), which has been set as an international standard by the International Organization for Standardization (ISO), called ISO 646 standard. Suitable for all Latin alphabets, ASCII codes are available in both 7-digit and 8-digit formats.

Because 1 binary number can represent (21=) 2 states; A 2-digit binary number can represent (22) = 4 states; By analogy, 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), which can be arranged into a decimal serial number 0 127. So, a 7-bit ASCII code is encoded with a seven-bit binary number and can represent 128 characters.

No. 0 32 and No. 127 (34 in total) are control characters or communication characters, such as control characters: lf (line break), cr (carriage enter), ff (page change), del (delete), bel (ring), etc.; Communication-specific characters: SOH (header), EOT (ending), ACK (acknowledge), etc.

No. 33 126 (of 94) is character, of which No. 48 57 is 0 9 ten Arabic numerals; 65 90 is 26 uppercase letters, 97 122 is 26 lowercase letters, and the rest are some punctuation marks, operation marks, etc.

Note: In a computer's memory unit, an ASCII code value occupies one byte (8 binary bits), and its highest bit (B7) is used as a parity bit. The so-called parity check refers to a method used to check whether there is an error in the transmission process, which is generally divided into two types: odd check and even check.

Odd check stipulates that the number of 1 in a byte must be odd, if it is not an odd number, add 1 to the highest b7; Even check stipulates that the number of 1s in a byte must be even, if it is not even, add 1 to the highest b7

If you are interested, you will be able to sit in on it. Is it 3 yards left? Or 8421?

Commonly used computer codes are: ASCII code, Chinese character code, etc.

Character encoding is to binary numbers to correspond to the characters of the character set, the most commonly used character set is ANSI, the binary encoding corresponding to the ANSI character set is called ANSI code, DOS and Windows systems are used ANSI code, but the character encoding used in the system to go through binary conversion, called the system code.

1.Chinese character encode: ANSI code is a single byte (8-bit binary number) encoding set, can only represent a maximum of 256 characters, can not represent a large number of Chinese characters, various countries and regions on the basis of ANSI code and design a variety of different Chinese character encoding sets, in order to be able to handle a large number of Chinese characters.

These encodings use a single byte to represent ANSI English characters (i.e., ANSI compatible codes) and double bytes to represent Chinese characters. Because there can only be one Chinese character internal code in a system, it cannot recognize the characters of other Chinese character internal codes, which causes the inconvenience of communication.

Code: GB code is the simplified Chinese character coding scheme announced by the state in 1980, which is widely used in mainland China and Singapore, also known as the national standard code. The GB code encodes a set of 6,763 Chinese characters, covering most of the Chinese characters in use.

Code: GBK code is an extended character encoding of GB code, encoding more than 20,000 simplified and traditional Chinese characters, and the simplified version of Win95 and Win98 are using GBK as the system code.

Code: BIG5 code is a Chinese character code for traditional Chinese characters, which is currently used in computer systems in Taiwan and Hong Kong.

Code: HZ code is a Chinese character code that is widely used on the Internet.

2022CJK Code: iOS 2022 is an encoding standard developed by the International Standards Organization (ISO) for characters in various languages. It adopts two-byte encoding, of which the Chinese encoding is called ISO

CN, Japanese and Korean codes are called JP and KR respectively. Generally, the three are collectively referred to as CJK codes. At present, CJK codes are mainly used in Internet networks.

Code: Unicode code is also an international standard code, which uses two-byte encoding and is not compatible with ANSI code. At present, it is used in the Internet, Windows system and many large software.

Information coding is the process of giving information elements the best in order to facilitate the storage, retrieval and use of information. That is, use different ** to establish a one-to-one correspondence relationship with the basic unit components in various information. Information coding must be standardized and systematic, and a reasonably designed coding system is an important factor in the vitality of the information management system.

Generally, there are two types of **, one is meaningful**, that is, to give ** a certain practical significance, which is convenient for classification and processing; One is meaningless, which is just a unique code for the information element to facilitate the operation of the information. The commonly used types are:

1) Sequential code, that is, the sequence of information elements is encoded sequentially;

2) interval code, that is, a ** interval is used to represent a certain information group;

3) Memory code, that is, the ** that can help associative memory.

There are many forms of information that can be expressed, and there are so many ways to code them. For example: our country enacted including:

Graphic characters** (GB 5007-85) for Chinese characters and commonly used symbols for Level 1 and 2, "Big 5" for Japanese, Korean and other characters and symbols, and "American Standard Code for Information Interchange" for English characters.

The most commonly used character encoding in computers is the ASCII code. In computers, all data is stored and calculated in binary numbers (because computers use high and low levels to represent 1 and 0 respectively), for example, 52 letters like a, b, c, d and other numbers (including uppercase) and other numbers and some commonly used symbols (such as *, , @等) are also used when stored in computers.

Which binary numbers are used to represent which symbols, of course, everyone can agree on their own set (this is called coding), and if you want to communicate with each other without causing confusion, then you must use the same coding rules, so the relevant standardization organizations in the United States have issued ASCII codes, which binary numbers are used to represent the above-mentioned commonly used symbols.

ASCII compatibility.

In order to solve some compatibility between Chinese, Japanese, and Korean hieroglyphic characters and ASCII, a double-byte character set (DBCS) appeared.

DBCS starts with the 256th **, and just like ASCII, the first 128** is ASCII. However, some of the higher 128** always follow the second byte. These two bytes together (called the first and following bytes) define a character, usually a complex hieroglyph.

The above content refers to Encyclopedia-ascii

The most commonly used Chinese character encoding in computers is the ASCII code.

ASCII codes use a specified combination of 7 or 8 binary numbers to represent 128 or 256 possible characters. The standard ASCII code, also known as the basic ASCII code, uses 7 binary digits (the remaining 1 binary is 0) to represent all uppercase and lowercase letters, the numbers 0 through 9, punctuation marks, and special control characters used in American English.

Odd check stipulates that the number of 1 in a byte must be odd, if it is not an odd number, add 1 to the highest b7; Even check stipulates that the number of 1s in a byte must be even, if it is not even, add 1 to the highest b7

The last 128 are called extended ASCII codes. Many x86-based systems support the use of extended (or "high") ASCII. The extended ASCII code allows the 8th bit of each character to be used to determine the additional 128 special symbol characters, loanword letters, and graphic symbols.

The most common Chinese characters in the computer, I feel that they must be completed by commas or periods.

At present, the most commonly used Chinese character encoding is the national standard code and the large font code.

It's ASCII code.

ASCII codes use a specified 7-bit or 8-bit binary number.

to represent 128 or 256 possible characters. The standard ASCII code, also known as the basic ASCII code, uses 7-digit binary numbers (the remaining 1-digit binary is 0) to represent all uppercase and lowercase letters, numbers 0 through 9, punctuation, and in American English.

special control characters used.

The odd check stipulates that the number of 1s in the correct ** byte must be odd, if it is not the odd number of potato infiltration filial piety, then add 1 to the highest b7; The even check stipulates that the number of 1s in a correct byte must be even.

If it is not an even number, add 1 to the highest b7.

The last 128 are called extended ASCII codes. Many x86-based systems support the use of extended (or "high") ASCII. The Extended ASCII code allows the 8th digit of each character to be used to determine the additional 128 special shout tremor symbols.

Characters, loanwords, letters, and graphic symbols.

a, all kinds of information in nature can be expressed in various forms of data, but computers can only recognize binary codes, so to convert various forms of data into binary codes, the computer can recognize.

Information is a description of the state and nature of things, while data is digital information, and the form of data in a computer is called a format. Select A for this question

a A 7-bit binary number represents one character.

The basic characteristics of the coding used in calculations or within the machine are ().

a.Uniqueness and publicity.

b.Uniqueness.

c.Uniqueness, commonality and ease of memory and recognition.

d.The other three options are incorrect.

Correct answer: Uniqueness and public envy.

Commonly used computer codes are: ASCII code, Chinese character code, etc.

Character encoding is to binary numbers to correspond to the character set of the character, the most commonly used character set is ANSI, the binary encoding corresponding to the ANSI character set is called ANSI code, DOS and Windows systems are used ANSI code, but the character encoding used in the system to go through binary conversion, called the system code.

There are three ways for Chinese characters to get into a computer:

Input through speech recognition: The computer uses the "auditory organs" equipped with it by the human dust eggplant to automatically identify Chinese phonetic elements, find different Chinese characters from different syllables, or judge different Chinese characters from the same syllable.

Input through Chinese characters and encoding: According to a certain coding method, Chinese characters are entered into the computer by people with the help of input devices.

The above content refers to: Encyclopedia - Chinese character coding.