Adresse web Les adresses web, également appelées URL (Uniform Resource Locator), sont des adresses utilisées pour identifier et localiser des ressources sur Internet, telles que des pages Web, des images, des vidéos et des fichiers. Elles sont généralement formées par la combinaison de protocoles de communication (tels que HTTP ou HTTPS), le nom de domaine (ou l'adresse IP) du serveur où se trouve la ressource, et un chemin vers la ressource spécifique. Les adresses web sont utilisées pour accéder à des contenus sur Internet à travers un navigateur web ou un autre client de réseau. Une invention fondamentale[modifier | modifier le code] Les trois inventions à la base du World Wide Web sont : Bien qu'un protocole (HTTP) et un format de données (HTML) aient été développés spécifiquement pour le Web, le web est conçu pour imposer un minimum de contraintes techniques[1]. La ressource est accessible en tant que fichier local page.html dans le répertoire /home/tim/.
Activating Browser Modes with Doctype In order to deal both with content written according to Web standards and with content written according to legacy practices that were prevalent in the late 1990s, today’s Web browsers implement various engine modes. This document explains what those modes are and how they are triggered. Summary for the Impatient The main conclusion to draw from this article is that you should start all your HTML documents (i.e. anything that gets served as text/html ) with <! If you want to take extra care to make sure that users of IE8, IE9 or IE10 cannot press a button that makes your site regress as if it was being viewed in IE7, either configure your server to send the HTTP header X-UA-Compatible: IE=Edge for text/html or put <meta http-equiv="X-UA-Compatible" content="IE=Edge"> in the head of your HTML documents (before any scripts). The Scope of This Document This document focuses on the mode selection mechanism and does not document the exact behaviors of each mode. The Modes Quirks Mode The Effects
Computer science Computer science deals with the theoretical foundations of information and computation, together with practical techniques for the implementation and application of these foundations History[edit] The earliest foundations of what would become computer science predate the invention of the modern digital computer. Machines for calculating fixed numerical tasks such as the abacus have existed since antiquity, aiding in computations such as multiplication and division. Further, algorithms for performing computations have existed since antiquity, even before sophisticated computing equipment were created. Blaise Pascal designed and constructed the first working mechanical calculator, Pascal's calculator, in 1642.[3] In 1673 Gottfried Leibniz demonstrated a digital mechanical calculator, called the 'Stepped Reckoner'.[4] He may be considered the first computer scientist and information theorist, for, among other reasons, documenting the binary number system. Contributions[edit] Philosophy[edit]
HTML.it HTML HTML or HyperText Markup Language is the standard markup language used to create web pages. HTML is written in the form of HTML elements consisting of tags enclosed in angle brackets (like <html>). HTML tags most commonly come in pairs like <h1>and </h1>, although some tags represent empty elements and so are unpaired, for example <img>. The first tag in a pair is the start tag, and the second tag is the end tag (they are also called opening tags and closing tags). The purpose of a web browser is to read HTML documents and compose them into visible or audible web pages. Web browsers can also refer to Cascading Style Sheets (CSS) to define the look and layout of text and other material. History[edit] The historic logo made by the W3C Development[edit] In 1980, physicist Tim Berners-Lee, who was a contractor at CERN, proposed and prototyped ENQUIRE, a system for CERN researchers to use and share documents. Further development under the auspices of the IETF was stalled by competing interests.
HTML Entity Character Lookup › Left Logic Created by Left Logic Using HTML entities is the right way to ensure all the characters on your page are validated. However, often finding the right entity code requires scanning through 250 rows of characters. This lookup allows you to quickly find the entity based on how it looks, e.g. like an < or the letter c. Features Search for entity characters based on how they look (taken from the W3C list of entities) Switch between standard and compressed views Copy the HTML entity to the clipboard Add your own keyword terms and characters to entities Settings stored in a browser cookie Available as a Firefox plugin - thanks to Yining To reset the keywords, clear your cookies for this page and the default keyword dictionary. How it works The lookup searches the html entities for matches to the searched character based on how your character looks. There's no clever logic behind this, only the most powerful computer known to man - man's own brain.
Category:Image processing Image processing is the application of signal processing techniques to the domain of images — two-dimensional signals such as photographs or video. Image processing does typically involve filtering an image using various types of filters. Related categories: computer vision and imaging. Subcategories This category has the following 13 subcategories, out of 13 total. Pages in category "Image processing" The following 200 pages are in this category, out of 213 total. (previous 200) (next 200)(previous 200) (next 200) Data (computing) In an alternate usage, binary files (which are not human-readable) are sometimes called "data" as distinguished from human-readable "text".[4] The total amount of digital data in 2007 was estimated to be 281 billion gigabytes (= 281 exabytes).[5][6] At its heart, a single datum is a value stored at a specific location. To store data bytes in a file, they have to be serialized in a "file format". Typically, programs are stored in special file types, different from those used for other data. Keys in data provide the context for values. Computer main memory or RAM is arranged as an array of "sets of electronic on/off switches" or locations beginning at 0. Data has some inherent features when it is sorted on a key. Retrieving a small subset of data from a much larger set implies searching though the data sequentially. The advent of databases introduced a further layer of abstraction for persistent data storage.
Technological singularity The technological singularity is the hypothesis that accelerating progress in technologies will cause a runaway effect wherein artificial intelligence will exceed human intellectual capacity and control, thus radically changing civilization in an event called the singularity.[1] Because the capabilities of such an intelligence may be impossible for a human to comprehend, the technological singularity is an occurrence beyond which events may become unpredictable, unfavorable, or even unfathomable.[2] The first use of the term "singularity" in this context was by mathematician John von Neumann. Proponents of the singularity typically postulate an "intelligence explosion",[5][6] where superintelligences design successive generations of increasingly powerful minds, that might occur very quickly and might not stop until the agent's cognitive abilities greatly surpass that of any human. Basic concepts Superintelligence Non-AI singularity Intelligence explosion Exponential growth Plausibility
AirPort Time Capsule Introduced on January 15, 2008 and released on February 29, 2008, the device has been upgraded several times, matching upgrades in the Extreme series routers. The earliest versions supported 802.11n wireless and came with a 500 GB hard drive in the base model, while the latest model as of 2014[update] features 802.11ac and a 2 TB hard drive. All models include three Ethernet ports and a single USB port. The USB port can be used for external peripheral devices to be shared over the network, such as external hard drives or printers. The NAS functionality utilizes a built-in "server grade" hard drive. §History[edit] The AirPort Time Capsule was introduced at Macworld Conference & Expo on January 15, 2008 and released on February 29, 2008, with pricing announced at US$299 (£199) for the 500 GB version and US$499 (£329) for the 1 TB version. In early 2009, Apple released the second generation Time Capsule. The third generation Time Capsule was released in October 2009. §Features[edit] AirPlay
Google American multinational technology company Google was founded on September 4, 1998, by American computer scientists Larry Page and Sergey Brin while they were PhD students at Stanford University in California. Together, they own about 14% of its publicly listed shares and control 56% of its stockholder voting power through super-voting stock. The company went public via an initial public offering (IPO) in 2004. In 2015, Google was reorganized as a wholly owned subsidiary of Alphabet Inc. Google and YouTube are the two most-visited websites worldwide followed by Facebook and X (formerly known as Twitter). History Early years Page and Brin originally nicknamed the new search engine "BackRub", because the system checked backlinks to estimate the importance of a site.[21][31][32] Hassan as well as Alan Steremberg were cited by Page and Brin as being critical to the development of Google. Growth Initial public offering 2012 onwards Products and services Search engine Advertising Consumer services
Tag (metadata) Keyword assigned to information The use of keywords as part of an identification and classification system long predates computers. Paper data storage devices, notably edge-notched cards, that permitted classification and sorting by multiple criteria were already in use prior to the twentieth century, and faceted classification has been used by libraries since the 1930s. Online databases and early websites deployed keyword tags as a way for publishers to help users find content. Within application software [edit] Assigned to computer files There are various systems for applying tags to the files in a computer's file system. Advantages and disadvantages Complex system dynamics