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Visual glossary – Get the understanding of certain common terms related to computers, internet and technology!

Updated on December 25, 2016
Cache
Cache
Php
Php
Proxy servers
Proxy servers
SEO
SEO
Torrents
Torrents

CACHE: pronounced cash, is an intermediate collection of data values, where records are temporarily stored to reduce the time taken for their retrieval on the user's local machine.

Once data is cached from a server, it can be fetched from the copied location, rather than re-computing the original values. Caching is generally carried out for data which is stored and is reusable by nature. Caching is effective for web-based services especially for popular websites which experience heavy traffic, thus reducing its overall load. Caching is a process carried out not only by web

servers but also by the CPUs in local machines. These use the RAM and some

paging techniques for the same.

HYPERTEXT Preprocessor: popularly known as PHP is a free-to-use scripting language used for creating dynamic web pages. Although PHP is considered

as a freeware, the PHP license that it is released under is not compatible with

certain provisions of the GNU General Public License (GPL), thus the application

can not be categorized as a complete open source package.

PHP explicitly does not have any formal specifications and usage guidelines, but it is managed and produced by the PHP Group which provides its basic and existing standards. It can be embedded into an HTML code to generate dynamic pages. It can also be used for operations like command-line scripting and application development along with web development. The current version is 5.2.9.

MUSICAL Instrument Digital Interface: better known as MIDI, is a standard protocol which enables synchronization of various electronic instruments with their specific controllers and computer systems. Thus with the help of MIDI standards, you can synchronize, control and exchange data between computers, synthesizers, MIDI controllers, sound cards, samplers, drum machines,  keyboards, amplifiers, etc.

As a standard, MIDI does not transmit or transfer any audio signals or media files. Instead it is programmed to transmit critical information such as the pitch and intensity of musical notes. It is also used to control signals like volume, cues, tempo, etc. MIDI is accepted as a noted electronic standard all over the world.

Proxy servers: A proxy server is an intermediate server system existing between a client to direct any access request to a centrally located server. Client

systems generally connect to proxies to request services such as file transfers, LAN or web connectivity, or other LAN resources (printers, scanners, etc) attached to the servers. They are also used as a deterrent, i.e. to stop the client from accessing certain resources either by blacklisting IP addresses or by using filters. Such techniques are used by various organizations to curtail access to various email sites and also for the searching of specific terms on the Internet.

SEO: is an acronym for Search Engine Optimization. It is a technique used by

webmasters to ensure that their sites get higher priority in search engine result

pages. This helps provide higher visibility, more clicks and better traffic to a web site. There are various factors that can contribute to better SEO of a website. Some of these include the relevance of webpage contents, the page tags created as metadata, and the URLs of individual pages. There are also various organizations which help you optimize your website.

Torrents: A TORRENT is a file used by BitTorrent applications. It's a P2P (peer-to-peer) file sharing protocol which facilitates distribution and sharing of large amounts of data. The concept of a torrent file is like that of a piece in a jigsaw

puzzle; you download a part of the file (*.torrent format) which has certain information. The application interface reads the information and helps you download the complete file with the help of the inputs from the other 'peers' in

the BitTorrent swarm. There are many popular BitTorrent client applications

like Azureus, Ares, etc. As a very popular file sharing protocol, BitTorrent

by itself accounts for around 35-38 percent of all Internet download traffic. But

being a P2P network, there are chances of downloading malware if due caution is not exercised.

WYSIWYG: is a commonly used acronym for 'What You See Is What You Get'. Any application that shows you your documents exactly as they will be printed rather than showing markup or code. When used with reference to office applications, WYSIWYG basically means that the interface explains to its users what the effects of various commands such as Print Preview, Fonts, Line and Section Breaks, etc, would be if they were used. The main benefit of such applications is that the user need not imagine the final outcome; he can see it in front of him. Moreover, there are some notable features like Print Preview that

allow users to adjust the document just before it is printed. MS Office programs are some of the most popular and widely used WYSIWYG applications.

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