ascii

In the programming aspect frequently encounters the question which the character encodes, because does not have a system understanding to the character set, is always garbled to make the confused, this blog post is to the character coding aspect to carry on the collation, in order to review later. In the process of learning the character set, I mainly from the character set (a) encoding, (b) takes up bytes, two aspects to analyze.Iso-8859-1/asciiReference: Iso-8859-1Iso-8859-1 (Latin1) encoding

Character encoding: ASCII, Unicode, UTF-8, gb2312 1. ASCII code We know that in a computer, all information is eventually represented as a binary string. Each binary bit has two states: 0 and 1. Therefore, eight binary bits can combine 256 states, which is called a byte ). That is to say, a single byte can be used to represent 256 different States. Each State corresponds to one symbol, that is, 256 symbol

1. ASCII ASCII (American Standard Code for information interchange, US Information Interchange Standard)CodeIs a computer coding system based on Latin letters. It is mainly used to display modern English and other Western European languages. It is the most common single-byte encoding system today and is equivalent to the international standard ISO/IEC 646. Because the number of one-bit binary data can b

http://blog.csdn.net/pipisorry/article/details/42387045ASCII codeThe ASCII code specifies a total of 128 characters, such as a space "space" is 32 (binary 00100000), the uppercase letter A is 65 (binary 01000001). These 128 symbols (including 32 control symbols that cannot be printed out) take up only one byte of the latter 7 bits, and the first 1-bit uniform is 0.Non-ASCII encodingIt is enough to encode 12

ASCII art is a technology that uses computer printable characters (generally 96 printable characters in ASCII Code) to express graphics. The traditional ASCII art is based on htmlCodeHowever, due to the differences between different browsers, the ASCII art that can be perfectly displayed in one browser is beyond the re

Today at noon, I suddenly want to understand the relationship between Unicode and UTF-8, so I began to search the Internet information.As a result, the problem was more complicated than I thought, and it was only after lunch that I saw 9 o'clock at night.Here is my notes, mainly used to organize their own ideas. But I try to be easy to write and I hope to be useful to other friends. After all, character coding is the cornerstone of computer technology, and to be proficient in using computers, yo

Character-coded notes: Ascii,unicode and UTF-8Today at noon, I suddenly want to understand the relationship between Unicode and UTF-8, so I began to search the Internet information.As a result, the problem was more complicated than I thought, and it was only after lunch that I saw 9 o'clock at night.Here is my notes, mainly used to organize their own ideas. But I try to be easy to write and I hope to be useful to other friends. After all, character co

PHP Basics description ASCII code table and character conversion, discuss the ASCII code table chart and character conversion to decimal, octal, hexadecimal, and HTML methods I. general ASCII code table Schematic ASCII code comparison tableTake character A as an example.Dec indicates decimal, such as 65Hx indicates h

Python built-in functions (4) -- ascii, pythonascii English document: Ascii(Object) AsRepr (), Return a string containing a printable representation of an object, but escape the non-ASCII characters in the string returnedRepr ()Using\ X,\ UOr\ UEscapes. This generates a string similar to that returnedRepr ()In Python 2. Note: 1. Return a printable string rep

Introduction ASCII (American Standard Code for Information interchange, United States Standards Information Interchange Code) is a set of computer coding systems based on the Latin alphabet, mainly used to display modern English and other Western European languages. It is now the most versatile single-byte encoding system and is equivalent to ISO/IEC 646. The ASCII code uses the specified7-bit or 8-b

When Python is installed, the default encoding is ASCII, and when non-ASCII encoding occurs in the program, Python processing often reports such an error unicodedecodeerror: ' ASCII ' codec can ' t decode byte 0x?? In position 1:ordinal No in range, Python does not handle non-ASCII encoding, it is necessary to set its

. A Boolean value that indicates whether the file is created in Unicode or ASCII file format. True If the file is created in a Unicode file format, False if the file is created in an ASCII file format. If this section is omitted, the ASCII file is assumed to be created. OpenTextFile method Opens the specified file and returns a TextStream object that can be rea

Enter ASCII code construct string function fromCharCode Format: The code is as follows Copy Code String.fromCharCode ("your string"); Read ASCII code charcodeat for single character Format: String variable. charCodeAt (character position); Cases ASCII code into characters: The code is as follows Copy Cod

1. ASCII Returns the decimal number corresponding to the specified character; Sql> Select ASCII (a) a,ascii (a) a,ascii (0) Zero,ascii () space from dual; A A ZERO space --------- --------- --------- --------- 65 97 48 32 2. CHR gives the integer, returns the correspon

Character encoding notes: ASCII, Unicode and UTF-8 I suddenly wanted to figure out the relationship between Unicode and UTF-8, so I began to look up information online. As a result, this problem is more complicated than I thought. After lunch, we can see that the problem is fixed at AM. Below are my notes, mainly used to sort out my own ideas. However, I try to make it easy to understand and hope it can be useful to other friends. After all, charact

Character encoding: ASCII, Unicode, UTF-8, gb2312 1. ASCII code We know that in a computer, all information is eventually represented as a binary string. Each binary bit has two states: 0 and 1. Therefore, eight binary bits can combine 256 states, which is called a byte ). That is to say, a single byte can be used to represent 256 different States. Each State corresponds to one symbol, that is, 256 symb

During some text processing recently, we found that character encoding is a headache, and conversion between various encodings often causes garbled characters, therefore, Perl and C ++ are respectively used to write auxiliary conversions.ProgramTo help some friends. First, I have a general understanding of common character encoding. The initial character encoding was the American standard information interchange code (ASCII), which was still in the

At noon today, I suddenly wanted to figure out the relationship between Unicode and UTF-8, so I began to look up information online. As a result, this problem is more complicated than I thought. After lunch, we can see that the problem is fixed at AM. Below are my notes, mainly used to sort out my own ideas. However, I try to make it easy to understand and hope it can be useful to other friends. After all, character encoding is the cornerstone of computer technology. To be familiar with computer

NanyiDate: October 28, 2007Today at noon, I suddenly want to understand the relationship between Unicode and UTF-8, so I began to search the Internet information.As a result, the problem was more complicated than I thought, and it was only after lunch that I saw 9 o'clock at night.Here is my notes, mainly used to organize their own ideas. But I try to be easy to write and I hope to be useful to other friends. After all, character coding is the cornerstone of computer technology, and to be profic

Http://www.ruanyifeng.com/blog/2007/10/ascii_unicode_and_utf-8.html**************************NanyiDate: October 28, 2007Today at noon, I suddenly want to understand the relationship between Unicode and UTF-8, so I began to search the Internet information.As a result, the problem was more complicated than I thought, and it was only after lunch that I saw 9 o'clock at night.Here is my notes, mainly used to organize their own ideas. But I try to be easy to write and I hope to be useful to other fri