Character Sets
•
0 likes•246 views
This document discusses character sets like ASCII and Unicode. ASCII maps English letters, numbers, and symbols to 7-bit binary codes and was the original standard, while Unicode is now more widely used as it supports over 110,000 characters from writing systems around the world, including ASCII as a subset for compatibility. An example at the end shows converting decimal values into ASCII text using an ASCII conversion table.
Report
Share
Report
Share
Download to read offline
Recommended
Ascii and Unicode (Character Codes)
Computer Science - ASCII and Unicode
ASCII and Unicode explained in brief with examples and ASCII table.
Unicode Fundamentals
You will get all the basic informations about Unicode from this one slide InShaAllah (if Allah, the lord of the worlds wishes).
Unicode
This document discusses Unicode transformation formats. It explains that computers assign numbers to characters and that older 8-bit encoding systems were limited, causing conflicts when different encodings were used. Unicode provides a unique number for every character to allow for worldwide text interchange. It describes common encoding schemes like UTF-8, UTF-16 and UTF-32 that are used to encode Unicode, along with their characteristics and benefits. The document also lists some examples of where Unicode is used.
Ascii 03
ASCII is an industry standard 7-bit code developed in 1963 that assigns binary values to letters, numbers, and other characters to represent text and control characters in computing devices. Most computers use the ASCII standard to represent text, allowing data to be transferred between computers. ASCII codes provide a mapping between binary data and human-readable characters so that text can be visually represented on screens and in printouts.
4 character encoding-ascii
ASCII is a 7-bit character encoding standard used to represent English text that defines 128 characters including 95 printable characters and 33 non-printing control characters. It was developed by ANSI and while it can only encode basic English text, ASCII was almost universally supported and could represent each character with a single byte, making it important for early digital communication.
Unicode
Unicode is an alternative character encoding standard to ASCII that can represent many more characters and languages. It was originally a 16-bit encoding that could represent around 7,000 characters, but now uses 8, 16, or 32 bits per character, allowing it to encode over 137,000 characters in the current version. While Unicode supports more languages by encoding more symbols, it also uses more computer memory than ASCII to store each character.
Unicode Encoding Forms
Unicode provides a standard way to encode characters from all languages. This introduced the problem of how to represent these characters in memory and storage. Several encoding forms were developed, including UTF-8, UTF-16, and UTF-32, each with their own advantages and disadvantages. UTF-8 became popular as it is backwards compatible with ASCII and uses variable length encoding for efficient storage. Notepad and browsers can determine the encoding of a file or page through a Byte Order Mark or HTTP header respectively. In practice, UTF-8 is commonly recommended due to its efficiency and compatibility.
ASCII-EBCDIC-HEX
ASCII and EBCDIC are two different character encodings. ASCII is used primarily for personal computers and Unix systems, while EBCDIC is used mainly on IBM mainframes. Signed fields in EBCDIC store numeric values using a combination of character codes and binary codes for the sign, so simply converting the bytes to ASCII characters would not preserve the numeric value. Proper conversion of signed EBCDIC fields to ASCII requires understanding that the sign byte contains both a sign code and the numeric value.
Recommended
Ascii and Unicode (Character Codes)
Computer Science - ASCII and Unicode
ASCII and Unicode explained in brief with examples and ASCII table.
Unicode Fundamentals
You will get all the basic informations about Unicode from this one slide InShaAllah (if Allah, the lord of the worlds wishes).
Unicode
This document discusses Unicode transformation formats. It explains that computers assign numbers to characters and that older 8-bit encoding systems were limited, causing conflicts when different encodings were used. Unicode provides a unique number for every character to allow for worldwide text interchange. It describes common encoding schemes like UTF-8, UTF-16 and UTF-32 that are used to encode Unicode, along with their characteristics and benefits. The document also lists some examples of where Unicode is used.
Ascii 03
ASCII is an industry standard 7-bit code developed in 1963 that assigns binary values to letters, numbers, and other characters to represent text and control characters in computing devices. Most computers use the ASCII standard to represent text, allowing data to be transferred between computers. ASCII codes provide a mapping between binary data and human-readable characters so that text can be visually represented on screens and in printouts.
4 character encoding-ascii
ASCII is a 7-bit character encoding standard used to represent English text that defines 128 characters including 95 printable characters and 33 non-printing control characters. It was developed by ANSI and while it can only encode basic English text, ASCII was almost universally supported and could represent each character with a single byte, making it important for early digital communication.
Unicode
Unicode is an alternative character encoding standard to ASCII that can represent many more characters and languages. It was originally a 16-bit encoding that could represent around 7,000 characters, but now uses 8, 16, or 32 bits per character, allowing it to encode over 137,000 characters in the current version. While Unicode supports more languages by encoding more symbols, it also uses more computer memory than ASCII to store each character.
Unicode Encoding Forms
Unicode provides a standard way to encode characters from all languages. This introduced the problem of how to represent these characters in memory and storage. Several encoding forms were developed, including UTF-8, UTF-16, and UTF-32, each with their own advantages and disadvantages. UTF-8 became popular as it is backwards compatible with ASCII and uses variable length encoding for efficient storage. Notepad and browsers can determine the encoding of a file or page through a Byte Order Mark or HTTP header respectively. In practice, UTF-8 is commonly recommended due to its efficiency and compatibility.
ASCII-EBCDIC-HEX
ASCII and EBCDIC are two different character encodings. ASCII is used primarily for personal computers and Unix systems, while EBCDIC is used mainly on IBM mainframes. Signed fields in EBCDIC store numeric values using a combination of character codes and binary codes for the sign, so simply converting the bytes to ASCII characters would not preserve the numeric value. Proper conversion of signed EBCDIC fields to ASCII requires understanding that the sign byte contains both a sign code and the numeric value.
Unicode
The document discusses the Unicode character encoding standard. It describes how earlier 8-bit character encoding systems were limited and could not represent all languages, which led to many conflicting encoding systems. Unicode addressed this by providing a universal encoded character set that could represent every character for all present and historic written languages, with each character assigned a unique numeric value. The Unicode standard aims to facilitate international exchange of text and language-independent software.
UTF-8: The Secret of Character Encoding
The document discusses character encoding standards like ASCII, UTF-8, and UTF-16. It explains that UTF-8 uses 1-4 bytes per character and has become the standard for XML and web content. The document raises questions about choosing the right encoding based on the characters, software, and browsers used.
Unicode
Character encodings map characters to binary representations using code points. Unicode is a widely adopted standard that assigns unique code points to characters. It is divided into planes with 65,536 code points each. UTF-8 is a common encoding format that uses variable-length octets to represent code points efficiently. While Unicode supports many languages, some criticize its complexity and that it does not include all possible scripts.
Storing text
This document discusses how text is stored on computers. It explains that each character is assigned a unique binary code value known as ASCII (American Standard Code for Information Interchange). ASCII used 7-bit codes to represent 128 common English characters, while Extended ASCII expanded to 8 bits to include additional characters. It also describes control characters as non-printable ASCII codes that perform functions like backspace. Finally, it defines a character set as the full repertoire of symbols a computer system can represent for a given language.
Ascii codes
Computer programmers developed coding systems to represent letters, numbers, and symbols with numeric codes. Three popular coding systems are EBCDIC, ASCII, and Unicode. EBCDIC used 6-bit codes and could represent 64 symbols, while ASCII is now most common and uses 8-bit codes for 256 symbols. Unicode is an evolving worldwide standard that uses 16-bit codes to represent over 65,000 symbols and characters from different languages.
Xml For Dummies Chapter 6 Adding Character(S) To Xml
This document provides an overview of character encodings and how they are handled in XML. It discusses the limitations of 7-bit and 8-bit character encodings and how Unicode addresses these by supporting a much wider range of characters with 16-bit encoding. It also describes how characters maps to numeric codes in Unicode/ISO 10646 and how UTF encodings implement Unicode. Additional topics covered include common character sets, using Unicode characters, and resources for finding character entity information.
Unicode - Hacking The International Character System
In this presentation we explore some of the problems of unicode and how they can be used for nefarious purposes in order to exploit a range of critical vulnerabilities including SQL Injection, XSS and many other.
The Good, the Bad, and the Ugly: What Happened to Unicode and PHP 6
n the halcyon days of early 2005, a project was launched to bring long overdue native Unicode and internationalization support to PHP. It was deemed so far reaching and important that PHP needed to have a version bump. After more than 4 years of development, the project (and PHP 6 for now) was shelved. This talk will introduce Unicode and i18n concepts, explain why Web needs Unicode, why PHP needs Unicode, how we tried to solve it (with examples), and what eventually happened. No sordid details will be left uncovered.
Applied physics iii lecture3 digital_codes
The document discusses different types of digital codes including binary coded decimal (BCD), Gray code, and alphanumeric codes like ASCII. BCD represents each decimal digit with a 4-bit binary pattern. Gray code minimizes bit changes between consecutive codes to reduce errors. ASCII is the most common alphanumeric code that assigns numbers to letters, punctuation, and controls. It uses 7-bit codes with the 8th bit sometimes used for parity.
Abap slide class4 unicode-plusfiles
The document discusses Unicode and file handling topics for an ABAP workshop. It covers characters and encoding, ASCII standards, glyphs and fonts, extended ASCII issues, character sets and code pages, little and big endian formats, Unicode, Unicode transformation formats, Unicode in SAP systems, file interfaces, and error handling for files on application and presentation servers. Unicode provides a unique number for every character to standardize representation across languages, platforms, and programs.
Representation of Text
Characters are represented using character sets like ASCII and Unicode. ASCII uses 7 bits for 128 characters while Extended ASCII uses 8 bits for 256 characters. Unicode was developed to represent more languages and uses 16 bits, allowing it to store up to 65,536 characters to support international communication needs beyond what ASCII provided. The document discusses the evolution of character set standards from ASCII to Extended ASCII to Unicode.
Overview of character encoding
This document provides an overview of character encoding and introduces Unicode. It defines character encoding as a system that represents characters with codes and specifies how to store characters as byte sequences. The document explains that Unicode maps every known character to a number and can be encoded in different formats, such as UTF-8, UTF-16, and UTF-32. It also notes that a lack of understanding of encodings can cause problems for applications.
Comprehasive Exam - IT
The document discusses different character encoding schemes used in computing, including binary-coded decimal (BCD), extended binary-coded decimal interchange code (EBCDIC), American Standard Code for Information Interchange (ASCII), Unicode, and UTF encodings. It provides details on how each scheme encodes decimal, alphanumeric, and multilingual characters, and compares their relative efficiencies and applications in different systems.
Base-64 Presentation
Simple presentation which explains how a string is encoded in base-64 and how a base-64 string is decoded to normal form.
Type हिन्दी in Java
This tutorial is about how we can write in Hindi in java.
After reading this you can try this with other languages too.
Programming fundamentals 3
This document discusses three types of computer languages: machine language, assembly language, and high-level languages. Machine language is directly understood by computers but consists of strings of numbers. Assembly language uses abbreviations that are clearer for humans. High-level languages resemble everyday English and use common notations. It also provides an overview of the tutor's qualifications and introduces some basic concepts of C++ programming including variables, data types, operators, and input/output statements.
Learn Linux: Irssi
Irssi is a command line IRC client that allows users to connect to multiple IRC servers and channels simultaneously. It has features like split views, scripts, themes, and logging capabilities. Common Irssi commands include /join to join channels, /query to open private messages, and /help for command assistance. Popular Irssi scripts provide additional functionality like autorejoin, reminders, and integrating other applications.
4 character encoding
Character encoding is a code that pairs a sequence of characters from a character set with another representation, such as numbers or electrical pulses, to facilitate the storage and transmission of text in computers and networks. Common examples of character encoding include Morse code, which represents letters as long and short key presses, and ASCII, which encodes characters as integers and 7-bit binary numbers generally extended to 8-bits. Proper character encoding is important for applications to correctly interpret and manipulate text.
Loading viewing/listening to Image and Audio, Fonts, Colors in Java
This document discusses loading and displaying various media types in Java, including images, audio, fonts, and colors. It provides details on the key classes and methods used to load and display images like Image, drawImage(), and ImageObserver. It also covers loading and playing audio using classes like AudioInputStream, AudioSystem, and Clip from the javax.sound packages. The document discusses fonts and how they are represented through classes like Font and glyphs. Finally, it addresses representing colors in Java using the Color class and constants like red, blue, green. Code examples are provided for displaying an image and setting background and foreground colors.
expect("").length.toBe(1)
My talks at Voxxed Days Zurich 2016. This is about he history of character encodings and unicode. And it's all about APIs stuck in the 90ies where things were very different.
Unicode and character sets
This document discusses Unicode, character sets, and how they are handled in software. It begins by explaining how characters are represented differently in ASCII, ISO-8859 character sets, and Unicode. It then describes the UTF-8, UTF-16, and UTF-32 encoding forms for representing Unicode characters as sequences of bytes. The document also discusses how Perl and MySQL handle character encoding and converting between different encodings.
Unicode, PHP, and Character Set Collisions
In recent years UTF-8 has become the dominant character encoding scheme, supplanting extended ASCII. This has led to an uneasy transition for users of PHP, where the assumption has always been that one character equals one byte. This presentation is for the DC PHP Developers' Community meeting on September 10, 2014. It examines the history of character set encoding and the ways that the PHP community is responding to the transition to UTF-8. Not surprisingly, there are surprises in the process! The slides are derived from the article here:
http://iconoun.com/articles/collisions
More Related Content
What's hot
Unicode
The document discusses the Unicode character encoding standard. It describes how earlier 8-bit character encoding systems were limited and could not represent all languages, which led to many conflicting encoding systems. Unicode addressed this by providing a universal encoded character set that could represent every character for all present and historic written languages, with each character assigned a unique numeric value. The Unicode standard aims to facilitate international exchange of text and language-independent software.
UTF-8: The Secret of Character Encoding
The document discusses character encoding standards like ASCII, UTF-8, and UTF-16. It explains that UTF-8 uses 1-4 bytes per character and has become the standard for XML and web content. The document raises questions about choosing the right encoding based on the characters, software, and browsers used.
Unicode
Character encodings map characters to binary representations using code points. Unicode is a widely adopted standard that assigns unique code points to characters. It is divided into planes with 65,536 code points each. UTF-8 is a common encoding format that uses variable-length octets to represent code points efficiently. While Unicode supports many languages, some criticize its complexity and that it does not include all possible scripts.
Storing text
This document discusses how text is stored on computers. It explains that each character is assigned a unique binary code value known as ASCII (American Standard Code for Information Interchange). ASCII used 7-bit codes to represent 128 common English characters, while Extended ASCII expanded to 8 bits to include additional characters. It also describes control characters as non-printable ASCII codes that perform functions like backspace. Finally, it defines a character set as the full repertoire of symbols a computer system can represent for a given language.
Ascii codes
Computer programmers developed coding systems to represent letters, numbers, and symbols with numeric codes. Three popular coding systems are EBCDIC, ASCII, and Unicode. EBCDIC used 6-bit codes and could represent 64 symbols, while ASCII is now most common and uses 8-bit codes for 256 symbols. Unicode is an evolving worldwide standard that uses 16-bit codes to represent over 65,000 symbols and characters from different languages.
Xml For Dummies Chapter 6 Adding Character(S) To Xml
This document provides an overview of character encodings and how they are handled in XML. It discusses the limitations of 7-bit and 8-bit character encodings and how Unicode addresses these by supporting a much wider range of characters with 16-bit encoding. It also describes how characters maps to numeric codes in Unicode/ISO 10646 and how UTF encodings implement Unicode. Additional topics covered include common character sets, using Unicode characters, and resources for finding character entity information.
Unicode - Hacking The International Character System
In this presentation we explore some of the problems of unicode and how they can be used for nefarious purposes in order to exploit a range of critical vulnerabilities including SQL Injection, XSS and many other.
The Good, the Bad, and the Ugly: What Happened to Unicode and PHP 6
n the halcyon days of early 2005, a project was launched to bring long overdue native Unicode and internationalization support to PHP. It was deemed so far reaching and important that PHP needed to have a version bump. After more than 4 years of development, the project (and PHP 6 for now) was shelved. This talk will introduce Unicode and i18n concepts, explain why Web needs Unicode, why PHP needs Unicode, how we tried to solve it (with examples), and what eventually happened. No sordid details will be left uncovered.
Applied physics iii lecture3 digital_codes
The document discusses different types of digital codes including binary coded decimal (BCD), Gray code, and alphanumeric codes like ASCII. BCD represents each decimal digit with a 4-bit binary pattern. Gray code minimizes bit changes between consecutive codes to reduce errors. ASCII is the most common alphanumeric code that assigns numbers to letters, punctuation, and controls. It uses 7-bit codes with the 8th bit sometimes used for parity.
Abap slide class4 unicode-plusfiles
The document discusses Unicode and file handling topics for an ABAP workshop. It covers characters and encoding, ASCII standards, glyphs and fonts, extended ASCII issues, character sets and code pages, little and big endian formats, Unicode, Unicode transformation formats, Unicode in SAP systems, file interfaces, and error handling for files on application and presentation servers. Unicode provides a unique number for every character to standardize representation across languages, platforms, and programs.
Representation of Text
Characters are represented using character sets like ASCII and Unicode. ASCII uses 7 bits for 128 characters while Extended ASCII uses 8 bits for 256 characters. Unicode was developed to represent more languages and uses 16 bits, allowing it to store up to 65,536 characters to support international communication needs beyond what ASCII provided. The document discusses the evolution of character set standards from ASCII to Extended ASCII to Unicode.
Overview of character encoding
This document provides an overview of character encoding and introduces Unicode. It defines character encoding as a system that represents characters with codes and specifies how to store characters as byte sequences. The document explains that Unicode maps every known character to a number and can be encoded in different formats, such as UTF-8, UTF-16, and UTF-32. It also notes that a lack of understanding of encodings can cause problems for applications.
Comprehasive Exam - IT
The document discusses different character encoding schemes used in computing, including binary-coded decimal (BCD), extended binary-coded decimal interchange code (EBCDIC), American Standard Code for Information Interchange (ASCII), Unicode, and UTF encodings. It provides details on how each scheme encodes decimal, alphanumeric, and multilingual characters, and compares their relative efficiencies and applications in different systems.
Base-64 Presentation
Simple presentation which explains how a string is encoded in base-64 and how a base-64 string is decoded to normal form.
Type हिन्दी in Java
This tutorial is about how we can write in Hindi in java.
After reading this you can try this with other languages too.
Programming fundamentals 3
This document discusses three types of computer languages: machine language, assembly language, and high-level languages. Machine language is directly understood by computers but consists of strings of numbers. Assembly language uses abbreviations that are clearer for humans. High-level languages resemble everyday English and use common notations. It also provides an overview of the tutor's qualifications and introduces some basic concepts of C++ programming including variables, data types, operators, and input/output statements.
Learn Linux: Irssi
Irssi is a command line IRC client that allows users to connect to multiple IRC servers and channels simultaneously. It has features like split views, scripts, themes, and logging capabilities. Common Irssi commands include /join to join channels, /query to open private messages, and /help for command assistance. Popular Irssi scripts provide additional functionality like autorejoin, reminders, and integrating other applications.
4 character encoding
Character encoding is a code that pairs a sequence of characters from a character set with another representation, such as numbers or electrical pulses, to facilitate the storage and transmission of text in computers and networks. Common examples of character encoding include Morse code, which represents letters as long and short key presses, and ASCII, which encodes characters as integers and 7-bit binary numbers generally extended to 8-bits. Proper character encoding is important for applications to correctly interpret and manipulate text.
Loading viewing/listening to Image and Audio, Fonts, Colors in Java
This document discusses loading and displaying various media types in Java, including images, audio, fonts, and colors. It provides details on the key classes and methods used to load and display images like Image, drawImage(), and ImageObserver. It also covers loading and playing audio using classes like AudioInputStream, AudioSystem, and Clip from the javax.sound packages. The document discusses fonts and how they are represented through classes like Font and glyphs. Finally, it addresses representing colors in Java using the Color class and constants like red, blue, green. Code examples are provided for displaying an image and setting background and foreground colors.
What's hot (19)
Xml For Dummies Chapter 6 Adding Character(S) To Xml
Xml For Dummies Chapter 6 Adding Character(S) To Xml
Unicode - Hacking The International Character System
Unicode - Hacking The International Character System
The Good, the Bad, and the Ugly: What Happened to Unicode and PHP 6
The Good, the Bad, and the Ugly: What Happened to Unicode and PHP 6
Loading viewing/listening to Image and Audio, Fonts, Colors in Java
Loading viewing/listening to Image and Audio, Fonts, Colors in Java
Viewers also liked
expect("").length.toBe(1)
My talks at Voxxed Days Zurich 2016. This is about he history of character encodings and unicode. And it's all about APIs stuck in the 90ies where things were very different.
Unicode and character sets
This document discusses Unicode, character sets, and how they are handled in software. It begins by explaining how characters are represented differently in ASCII, ISO-8859 character sets, and Unicode. It then describes the UTF-8, UTF-16, and UTF-32 encoding forms for representing Unicode characters as sequences of bytes. The document also discusses how Perl and MySQL handle character encoding and converting between different encodings.
Unicode, PHP, and Character Set Collisions
In recent years UTF-8 has become the dominant character encoding scheme, supplanting extended ASCII. This has led to an uneasy transition for users of PHP, where the assumption has always been that one character equals one byte. This presentation is for the DC PHP Developers' Community meeting on September 10, 2014. It examines the history of character set encoding and the ways that the PHP community is responding to the transition to UTF-8. Not surprisingly, there are surprises in the process! The slides are derived from the article here:
http://iconoun.com/articles/collisions
Digital Image Processing and Edge Detection
This presentation is an introduction for digital image processing and edge detection which covers them on four topic; example of fields that use digital image processing, visibility that depends on human perception, fundamental definition of an image, analysis of edge detection algorithms such as Roberts, Prewitt, Sobel and Laplacian of a Gaussian.
Ascii adjust & decimal adjust
The document describes various ASCII and decimal adjustment instructions used for arithmetic operations on unpacked and packed BCD values. It explains the AAA, AAS, AAM, AAD, DAA, and DAS instructions and the operations they perform to adjust results of addition, subtraction, multiplication and division of BCD values to produce the correct BCD output. Examples are provided to illustrate the use of each instruction on sample BCD values.
What character is that
Character sets and collations are am important part of the database setup. In this presentation I show you the history of character sets and how they are used today, how UTF-8 works and how MySQL handles all this.
Unicode, character encodings in programming and standard persian keyboard layout
در این ارائه با ابتداییترین معلوماتی که یک برنامهنویس باید در مورد کدگذاریهای نویسهها (کاراکتر انکدینگها) داشته باشد آشنا میشویم. سیری بر تاریخچه کدگذاریها خواهیم داشت و خواهیم دید چگونه از مشکلات معمول در این ضمینه اجتناب کرد. همچنین در انتها با کیبورد استاندارد فارسی و سطوح کاربردی مختلف آن آشنا خواهیم شد
Unicode
Unicode is a character encoding standard that supports many languages. It defines a large set of characters and assigns a unique numeric code to each one. Unicode also defines UTF-8, UTF-16 and UTF-32 encoding schemes to represent these characters using 8, 16 or 32 bits respectively. UTF-8 is most commonly used as it is backwards compatible with ASCII and uses fewer bytes for common Latin characters. The goals of Unicode are to provide a universal character set that defines the semantics of all characters and can support all languages.
Digital Image Processing Fundamental
This document provides an overview of digital image processing and is divided into multiple parts. Part I discusses digital image fundamentals, image transforms, image enhancement, image restoration, image compression, and image segmentation. It introduces key concepts such as digital image systems, sampling and quantization, pixel relationships, and image transforms in both the spatial and frequency domains. Image processing techniques like filtering, histogram processing, and frequency domain filtering are also summarized.
Viewers also liked (9)
Unicode, character encodings in programming and standard persian keyboard layout
Unicode, character encodings in programming and standard persian keyboard layout
Similar to Character Sets
Character sets and alphabets
The document discusses different character sets used in computing. It describes the ASCII character set which uses 128 characters and numbers to represent English letters, numbers and symbols. It also discusses the extended character set which includes 255 characters like symbols and international letters. Finally, it introduces Unicode which began in 1989 and aims to support encoding for all languages and alphabets in the world using up to 65,000 characters, grouping related symbols into scripts to serve multiple languages.
Lecture_ASCII and Unicode.ppt
Unicode is a character encoding standard that aims to support all languages of the world. It evolved from limitations of earlier standards like ASCII that could only represent English characters. Unicode uses 16-bit or 32-bit encodings to represent over 1 million characters, as opposed to ASCII's 128 characters. Popular Unicode encodings include UTF-8, UTF-16, and UTF-32. The widespread adoption of Unicode has allowed globalization of text and the internet by supporting the simultaneous use of different languages.
ASCII and Unicode.pptx
ASCII (American Standard Code for Information Interchange) is a 7-bit character encoding scheme where each character is assigned a number from 0-127. It was developed in 1963 to provide a standard for coding characters like letters, numbers, and symbols. Computers use ASCII to represent text characters numerically so they can be stored and processed using binary numbers.
chapter-2.pptx
Computers represent both numeric and non-numeric characters using predefined codes. The ASCII code represents 128 characters using 7 bits, while ASCII-8 extends this to 256 characters using 8 bits. ISCII was developed for Indian languages and allows simultaneous use of English and Indian scripts using 8 bits per character. Unicode is now the universal standard adopted by all platforms that assigns a unique number to every character worldwide for interchange, processing and display of written texts across languages.
JAVA CHARACTER SETS- FUNDAMENTALS OF JAVA
Presentation of java character set .
It includes following topics-
Introduction to java fundamentals
Introduction to character set -ASCII & UNICODE
To watch full lecture kindly click on the link below.
https://www.youtube.com/watch?v=2_JkgxXzkMI
Adv uni
The ASCII system standardizes text files by assigning each character a unique number that can be converted to a binary pattern, ensuring compatibility across computer systems. It uses 7 bits, allowing for 128 characters including 32 control characters. Extended ASCII expands this to 8 bits for 256 characters. Unicode supersedes these systems with 16 bits supporting over 65,000 characters, including those needed for languages like Japanese. While Unicode supports many scripts, its files are larger since each character requires 2 bytes of storage.
Character encoding standard(1)
This document discusses character encoding systems used to represent textual data in computing. It describes several character encoding standards including ASCII, EBCDIC, ISO 646, ISO 885, and UTF-16. ASCII is a 7-bit encoding that can represent 128 characters and was limited as it does not support languages with large character sets. EBCDIC is an 8-bit encoding mainly used on IBM mainframe computers. UTF-16 is a 16-bit Unicode encoding that can represent over 65,000 characters and supports representation of text in many languages.
Data Representation in Computers
Lecture Slides of Introduction to Information Technology. The lecture slides are based on the book of Brian K. Williams and Stacey C. Sawyers
Data encryption and tokenization for international unicode
Unicode is an information technology standard for the consistent encoding, representation, and handling of text expressed in most of the world's writing systems. The standard is maintained by the Unicode Consortium, and as of March 2020, it has a total of 143,859 characters, with Unicode 13.0 (these characters consist of 143,696 graphic characters and 163 format characters) covering 154 modern and historic scripts, as well as multiple symbol sets and emoji. The character repertoire of the Unicode Standard is synchronized with ISO/IEC 10646, each being code-for-code identical with the other.
The Unicode Standard consists of a set of code charts for visual reference, an encoding method and set of standard character encodings, a set of reference data files, and a number of related items, such as character properties, rules for normalization, decomposition, collation, rendering, and bidirectional text display order (for the correct display of text containing both right-to-left scripts, such as Arabic and Hebrew, and left-to-right scripts). Unicode's success at unifying character sets has led to its widespread and predominant use in the internationalization and localization of computer software. The standard has been implemented in many recent technologies, including modern operating systems, XML, Java (and other programming languages), and the .NET Framework.
Unicode can be implemented by different character encodings. The Unicode standard defines Unicode Transformation Formats (UTF) UTF-8, UTF-16, and UTF-32, and several other encodings. The most commonly used encodings are UTF-8, UTF-16, and UCS-2 (a precursor of UTF-16 without full support for Unicode)
SignWriting in Unicode Next
Updated for UTC #156, this presentation discusses the Center for Sutton Movement Writing's proposal for the full script support of Sutton SignWriting in Unicode.
Ascii codes
Computer programmers developed coding systems to represent letters, numbers, and symbols with numeric codes. Three popular coding systems are EBCDIC, ASCII, and Unicode. EBCDIC used 6-bit codes and could represent 64 symbols, while ASCII is now most common and uses 8-bit codes for 256 symbols. Unicode is an developing standard that uses two bytes and 16 bits to represent each of its 65,536 symbols, allowing it to include symbols from languages around the world.
Data Communication & Computer Networks : Data Types
These slides cover the fundamentals of data communication & networking. it covers all data types which are used in communication of data over transmission medium. it is useful for engineering students & also for the candidates who want to master data communication & computer networing.
Number System.pptx
The document discusses different number systems used in computing. It introduces the concept of a number system as a way to represent numbers using symbols. The key number systems covered are binary, octal, decimal, and hexadecimal. It also discusses units of data measurement like bits and bytes, with 1 byte equal to 8 bits. Common text encoding standards like ASCII, Extended ASCII, EBCDIC, and Unicode are summarized with their associated character sets and value ranges.
Topic 2.3 (1)
The document discusses information coding schemes used in data processing. It explains three common coding schemes - ASCII, EBCDIC, and Unicode. ASCII uses 8 bits to represent 256 characters and is used on personal computers. EBCDIC also uses 8 bits but is used on IBM mainframes. Unicode uses 16 bits to represent over 65,000 characters and supports all global languages.
Camomile : A Unicode library for OCaml
This document summarizes Camomile, a Unicode library for OCaml. It provides a Unicode character type, supports UTF-8, UTF-16 and UTF-32 encodings, and allows conversion between 200+ encodings. It also supports case mapping, collation, and Unicode normal forms to handle equivalent string representations. The library uses functors and lazy evaluation. Modules provide Unicode normalization and canonical comparison of strings based on semantic equivalence.
Lecture 4 system programming-data representation
This document provides an overview of data representation. It discusses how data is stored digitally using binary digits (bits) that represent the values 0 and 1. Numbers are represented using the binary number system, while text is represented using character encoding schemes like ASCII and Unicode that assign numeric codes to letters, symbols, and characters. The basic unit of digital storage is the byte, which consists of 8 bits that can be combined to represent numeric values, characters, or other data types in a format readable by electronic devices.
004 NUMBER SYSTEM (1).pdf
- The document discusses various number systems like decimal, binary, octal and hexadecimal. It explains how each number system uses a different base or radix to represent numbers using symbols.
- Conversion methods between different number systems are also described, using techniques like successive division and multiplying place values.
- Character encoding standards like ASCII, ISCII and Unicode are introduced which allow representation of text in computers using numeric codes. UTF-8 encoding scheme of Unicode is also summarized briefly.
Ch 02 Encoding & Number System.pdf
This document discusses different encoding schemes and number systems used in computers. It begins by explaining how keyboard characters are mapped to binary codes that computers can understand. This is done through encoding schemes like ASCII and UNICODE which assign unique codes to characters. It then describes different number systems like decimal, binary, octal and hexadecimal that are used to represent numbers in a format understood by computers and humans. Decimal uses base-10, binary uses base-2, octal uses base-8 and hexadecimal uses base-16.
Encodings - Ruby 1.8 and Ruby 1.9
This document summarizes encodings in computing, including ASCII, ISO-8859, Unicode, and how they are handled in Ruby 1.8 and 1.9. It discusses that text encoding and content are separate concepts and recommends using UTF-8. It also explains Ruby 1.8's limited Unicode support and how Ruby 1.9 introduced multilingualization to allow setting source encoding and handling different encoded strings.
13001620124_AashishAgarwal_Data representation.text and numbers.pdf
This document discusses data representation in computer networks. It defines data and describes how all data inside computers must be converted to binary form to be processed. It then discusses various forms of data representation including numbers, text, images, audio and video. The document outlines goals of understanding how data is represented and converted to machine language for numbers and text. It provides examples of binary representation of numbers and the ASCII code for representing text characters. Finally, it discusses calculating file sizes based on the number of ASCII characters.
Similar to Character Sets (20)
Data encryption and tokenization for international unicode
Data encryption and tokenization for international unicode
Data Communication & Computer Networks : Data Types
Data Communication & Computer Networks : Data Types
13001620124_AashishAgarwal_Data representation.text and numbers.pdf
13001620124_AashishAgarwal_Data representation.text and numbers.pdf
More from Leo Hernandez
Everyday Functional Programming in JavaScript
The document is a presentation about everyday functional programming in JavaScript. It discusses how functional programming uses functions as atomic units with known input/output behavior rather than objects. Immutable data is preferred to simplify parallel processing and declarative code is easier to read. The presenter will do a live coding demo covering concepts like unit testing, refactoring, function composition, currying, data immutability, and using high order functions instead of loops.
Everyday Functional Programming in JavaScript
This document summarizes a presentation on everyday functional programming in JavaScript. The presentation introduces functional programming concepts like using functions as atomic units with known input-output behavior, immutable data to help with simplicity and parallel processing, and declarative code to make intentions clear. It also discusses how many developers may already be using functional programming techniques without realizing it when using React and its function components to render views.
Binary Addition
Binary addition is similar to decimal addition, with numbers represented using only 1s and 0s instead of multiple digits. The document walks through an example of adding 0111 and 1111 in binary to get 010110 by carrying digits place-to-place and tracking carries of 1 or 0. It then provides some additional practice problems for the reader to try.
Binary Concepts Review
This document discusses binary concepts such as how computers store and process information in bits. It explains that as the number of bits doubles, the number of values represented grows exponentially according to the formula Total Values = 2number of bits. The four most common number systems used in computer science are defined as binary, octal, decimal, and hexadecimal. Methods for converting between these systems like binary to decimal are demonstrated. The document also covers topics like binary addition and defining integers as whole numbers and their negatives. It discusses the three common ways of signing integers as signed magnitude, one's complement, and two's complement, noting that two's complement is most widely used.
Octal and Hexadecimal Numbering Systems
This document discusses different numbering systems such as binary, octal, decimal, and hexadecimal. It explains that binary is used to represent individual bits, octal represents groups of 2 bits, and hexadecimal represents nibbles (groups of 4 bits). Examples are provided to show how a single value can be represented in different numbering systems including binary, octal, decimal, and hexadecimal.
Programming Paradigms
This document discusses four main programming paradigms: imperative, functional, object-oriented programming, and dynamic programming. It provides examples of each paradigm and lists some common languages that support each style. Imperative programming tells the computer how to do things using commands like loops. Functional programming tells the computer what to do without specifying how. Object-oriented programming models code as objects that represent real-world things. Dynamic programming uses weak or no type checking of data types.
ES6 - Make JavaScript Great for the First Time
Leo Hernandez gave a presentation on ES6 features for JavaScript. He began with an introduction that included details about himself and his work. The presentation covered key ES6 features such as string templates, const/let, arrow functions, destructuring, modules, classes and more. He emphasized modern features that make JavaScript more powerful and encouraged using features like const, arrow functions, and high order functions to write cleaner code. The presentation concluded with Leo offering to do a live coding demonstration.
Developing Single Page Apps with Ember.js
This document discusses how Ember.js can help alleviate JavaScript fatigue by providing an integrated framework and development environment. It notes that Ember is convention-based and handles configuration of the build process and tools automatically. The document then provides an overview of key Ember concepts like ember-cli, routes, models, controllers, templates, and Ember-data.
JavaScript Essentials for Ember development
This document contains the slides from a presentation on JavaScript Essentials for Ember Development. The presentation introduces the speaker and their background in Ember development. It recommends attendees understand ES6 features like string interpolation, lambda expressions, and default parameters. It advocates using high-order functions over imperative code and promises in Ember. The presentation also covers closures, computed macros, and other JavaScript tips.
Tech 101 @ delray tech spaces
The document provides a high-level overview of the history and basics of computing technology. It discusses how computers operate on input data and commands, the development of binary code and assembly language, and higher-level languages like C, C++, Java, PHP, Python and Ruby. It also covers databases and the future of technology, noting that artificial intelligence and data science will enable more automation and autonomy, and that emerging technologies like self-driving cars will significantly impact society.
JavaScript ES6
This document discusses ES6, the new version of JavaScript, and provides an overview of some of its key features including classes, iterators, lambdas, string interpolation, modules, and let block scoping. It encourages readers to begin using ES6 today by leveraging transpilation tools like Babel that allow ES6 code to run on current browsers and platforms. The best resource mentioned for learning ES6 is the Babel website, which contains tutorials, a live code editor, and helps developers get started with ES6.
Intro to ember.js
Ember.js is a JavaScript framework for building web applications. It provides features like routing, single page application support, an MVC framework, data access through REST services, reusable components, and testing. Core concepts include routes, controllers, templates, models, and the router which drives the application. Ember uses conventions like MVC and provides tools like Ember CLI to generate code and build/test applications.
More from Leo Hernandez (12)
Recently uploaded
Neo4j - Product Vision and Knowledge Graphs - GraphSummit Paris
Dr. Jesús Barrasa, Head of Solutions Architecture for EMEA, Neo4j
Découvrez les dernières innovations de Neo4j, et notamment les dernières intégrations cloud et les améliorations produits qui font de Neo4j un choix essentiel pour les développeurs qui créent des applications avec des données interconnectées et de l’IA générative.
Hand Rolled Applicative User Validation Code Kata
Could you use a simple piece of Scala validation code (granted, a very simplistic one too!) that you can rewrite, now and again, to refresh your basic understanding of Applicative operators <*>, <*, *>?
The goal is not to write perfect code showcasing validation, but rather, to provide a small, rough-and ready exercise to reinforce your muscle-memory.
Despite its grandiose-sounding title, this deck consists of just three slides showing the Scala 3 code to be rewritten whenever the details of the operators begin to fade away.
The code is my rough and ready translation of a Haskell user-validation program found in a book called Finding Success (and Failure) in Haskell - Fall in love with applicative functors.
Using Query Store in Azure PostgreSQL to Understand Query Performance
Microsoft has added an excellent new extension in PostgreSQL on their Azure Platform. This session, presented at Posette 2024, covers what Query Store is and the types of information you can get out of it.
openEuler Case Study - The Journey to Supply Chain Security
openEuler Case Study - The Journey to Supply Chain Security
UI5con 2024 - Keynote: Latest News about UI5 and it’s Ecosystem
Learn about the latest innovations in and around OpenUI5/SAPUI5: UI5 Tooling, UI5 linter, UI5 Web Components, Web Components Integration, UI5 2.x, UI5 GenAI.
Recording:
https://www.youtube.com/live/MSdGLG2zLy8?si=INxBHTqkwHhxV5Ta&t=0
Empowering Growth with Best Software Development Company in Noida - Deuglo
Do you want Software for your Business? Visit Deuglo
Deuglo has top Software Developers in India. They are experts in software development and help design and create custom Software solutions.
Deuglo follows seven steps methods for delivering their services to their customers. They called it the Software development life cycle process (SDLC).
Requirement — Collecting the Requirements is the first Phase in the SSLC process.
Feasibility Study — after completing the requirement process they move to the design phase.
Design — in this phase, they start designing the software.
Coding — when designing is completed, the developers start coding for the software.
Testing — in this phase when the coding of the software is done the testing team will start testing.
Installation — after completion of testing, the application opens to the live server and launches!
Maintenance — after completing the software development, customers start using the software.
Graspan: A Big Data System for Big Code Analysis
We built a disk-based parallel graph system, Graspan, that uses a novel edge-pair centric computation model to compute dynamic transitive closures on very large program graphs.
We implement context-sensitive pointer/alias and dataflow analyses on Graspan. An evaluation of these analyses on large codebases such as Linux shows that their Graspan implementations scale to millions of lines of code and are much simpler than their original implementations.
These analyses were used to augment the existing checkers; these augmented checkers found 132 new NULL pointer bugs and 1308 unnecessary NULL tests in Linux 4.4.0-rc5, PostgreSQL 8.3.9, and Apache httpd 2.2.18.
- Accepted in ASPLOS ‘17, Xi’an, China.
- Featured in the tutorial, Systemized Program Analyses: A Big Data Perspective on Static Analysis Scalability, ASPLOS ‘17.
- Invited for presentation at SoCal PLS ‘16.
- Invited for poster presentation at PLDI SRC ‘16.
Why Choose Odoo 17 Community & How it differs from Odoo 17 Enterprise Edition
Why Choose Odoo 17 Community & How it differs from Odoo 17 Enterprise EditionEnvertis Software Solutions
Odoo ERP software
Odoo ERP software, a leading open-source software for Enterprise Resource Planning (ERP) and business management, has recently launched its latest version, Odoo 17 Community Edition. This update introduces a range of new features and enhancements designed to streamline business operations and support growth.
The Odoo Community serves as a cost-free edition within the Odoo suite of ERP systems. Tailored to accommodate the standard needs of business operations, it provides a robust platform suitable for organisations of different sizes and business sectors. Within the Odoo Community Edition, users can access a variety of essential features and services essential for managing day-to-day tasks efficiently.
This blog presents a detailed overview of the features available within the Odoo 17 Community edition, and the differences between Odoo 17 community and enterprise editions, aiming to equip you with the necessary information to make an informed decision about its suitability for your business.What is Augmented Reality Image Tracking
Augmented Reality (AR) Image Tracking is a technology that enables AR applications to recognize and track images in the real world, overlaying digital content onto them. This enhances the user's interaction with their environment by providing additional information and interactive elements directly tied to physical images.
Need for Speed: Removing speed bumps from your Symfony projects ⚡️
No one wants their application to drag like a car stuck in the slow lane! Yet it’s all too common to encounter bumpy, pothole-filled solutions that slow the speed of any application. Symfony apps are not an exception.
In this talk, I will take you for a spin around the performance racetrack. We’ll explore common pitfalls - those hidden potholes on your application that can cause unexpected slowdowns. Learn how to spot these performance bumps early, and more importantly, how to navigate around them to keep your application running at top speed.
We will focus in particular on tuning your engine at the application level, making the right adjustments to ensure that your system responds like a well-oiled, high-performance race car.
Oracle Database 19c New Features for DBAs and Developers.pptx
Oracle Database 19c New Features for DBAs and Developers. This video you can watch from my youtube channel at https://youtu.be/m-F-mZA3MkU
How to write a program in any programming language
How to write a program in any programming language
GraphSummit Paris - The art of the possible with Graph Technology
Sudhir Hasbe, Chief Product Officer, Neo4j
Join us as we explore breakthrough innovations enabled by interconnected data and AI. Discover firsthand how organizations use relationships in data to uncover contextual insights and solve our most pressing challenges – from optimizing supply chains, detecting fraud, and improving customer experiences to accelerating drug discoveries.
Revolutionizing Visual Effects Mastering AI Face Swaps.pdf
The quest for the best AI face swap solution is marked by an amalgamation of technological prowess and artistic finesse, where cutting-edge algorithms seamlessly replace faces in images or videos with striking realism. Leveraging advanced deep learning techniques, the best AI face swap tools meticulously analyze facial features, lighting conditions, and expressions to execute flawless transformations, ensuring natural-looking results that blur the line between reality and illusion, captivating users with their ingenuity and sophistication.
Web:- https://undressbaby.com/
8 Best Automated Android App Testing Tool and Framework in 2024.pdf
Regarding mobile operating systems, two major players dominate our thoughts: Android and iPhone. With Android leading the market, software development companies are focused on delivering apps compatible with this OS. Ensuring an app's functionality across various Android devices, OS versions, and hardware specifications is critical, making Android app testing essential.
socradar-q1-2024-aviation-industry-report.pdf
SOCRadar's Aviation Industry Q1 Incident Report is out now!
The aviation industry has always been a prime target for cybercriminals due to its critical infrastructure and high stakes. In the first quarter of 2024, the sector faced an alarming surge in cybersecurity threats, revealing its vulnerabilities and the relentless sophistication of cyber attackers.
SOCRadar’s Aviation Industry, Quarterly Incident Report, provides an in-depth analysis of these threats, detected and examined through our extensive monitoring of hacker forums, Telegram channels, and dark web platforms.
E-Invoicing Implementation: A Step-by-Step Guide for Saudi Arabian Companies
Explore the seamless transition to e-invoicing with this comprehensive guide tailored for Saudi Arabian businesses. Navigate the process effortlessly with step-by-step instructions designed to streamline implementation and enhance efficiency.
A Study of Variable-Role-based Feature Enrichment in Neural Models of Code
Understanding variable roles in code has been found to be helpful by students
in learning programming -- could variable roles help deep neural models in
performing coding tasks? We do an exploratory study.
- These are slides of the talk given at InteNSE'23: The 1st International Workshop on Interpretability and Robustness in Neural Software Engineering, co-located with the 45th International Conference on Software Engineering, ICSE 2023, Melbourne Australia
LORRAINE ANDREI_LEQUIGAN_HOW TO USE ZOOM
Zoom is a comprehensive platform designed to connect individuals and teams efficiently. With its user-friendly interface and powerful features, Zoom has become a go-to solution for virtual communication and collaboration. It offers a range of tools, including virtual meetings, team chat, VoIP phone systems, online whiteboards, and AI companions, to streamline workflows and enhance productivity.
Recently uploaded (20)
Neo4j - Product Vision and Knowledge Graphs - GraphSummit Paris
Neo4j - Product Vision and Knowledge Graphs - GraphSummit Paris
Using Query Store in Azure PostgreSQL to Understand Query Performance
Using Query Store in Azure PostgreSQL to Understand Query Performance
openEuler Case Study - The Journey to Supply Chain Security
openEuler Case Study - The Journey to Supply Chain Security
UI5con 2024 - Keynote: Latest News about UI5 and it’s Ecosystem
UI5con 2024 - Keynote: Latest News about UI5 and it’s Ecosystem
Empowering Growth with Best Software Development Company in Noida - Deuglo
Empowering Growth with Best Software Development Company in Noida - Deuglo
Why Choose Odoo 17 Community & How it differs from Odoo 17 Enterprise Edition
Why Choose Odoo 17 Community & How it differs from Odoo 17 Enterprise Edition
Need for Speed: Removing speed bumps from your Symfony projects ⚡️
Need for Speed: Removing speed bumps from your Symfony projects ⚡️
Oracle Database 19c New Features for DBAs and Developers.pptx
Oracle Database 19c New Features for DBAs and Developers.pptx
How to write a program in any programming language
How to write a program in any programming language
GraphSummit Paris - The art of the possible with Graph Technology
GraphSummit Paris - The art of the possible with Graph Technology
Revolutionizing Visual Effects Mastering AI Face Swaps.pdf
Revolutionizing Visual Effects Mastering AI Face Swaps.pdf
8 Best Automated Android App Testing Tool and Framework in 2024.pdf
8 Best Automated Android App Testing Tool and Framework in 2024.pdf
E-Invoicing Implementation: A Step-by-Step Guide for Saudi Arabian Companies
E-Invoicing Implementation: A Step-by-Step Guide for Saudi Arabian Companies
A Study of Variable-Role-based Feature Enrichment in Neural Models of Code
A Study of Variable-Role-based Feature Enrichment in Neural Models of Code
Character Sets
- 1. Character Sets - ASCII and Unicode
- 2. Characters Sets Maps text characters to binary code. How a computer is able to use and make sense of text. Standardized for entire world to ease communications Unicode UTF-8 standard is most widely used character set in the Internet
- 3. ASCII American Standard Code for Information Interchange The classic character set. Is based on 7-bit range Maps all English letters, numbers, symbols, and special control characters (return, line feed, escape, etc.)
- 4. ASCII (space) - decimal 32 ‘A’ - decimal 65 (escape) - decimal 27 (return) - decimal 13
- 5. Unicode Super character set with space for all characters in most of the world’s writing systems. That’s over 110,000 characters. Supports right to left languages list Arabic and Hebrew
- 6. Unicode Includes ASCII as a subset for backwards compatibility. All ASCII characters hold the same values. Also includes icons and special symbols ⚑☺❤
- 7. Exercise Using an ASCII conversion table, convert the following decimal values into ASCII Text: 67 79 68 69 13 10 76 73 70 69 CODE LIFE 67 79 68 69 32 76 73 70 69 CODE LIFE