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Google's Open Source mobile phone operating system.


Software designed to stop viruses attacking your PC. Various brands available, such as AVG, Norton, ESET Nod32, Avira, McAfee etc.

A format of DVD designed for the storage of high-definition video and data.

A wireless technology for exchanging information across small distances. Commonly used in mobile phones, tablets and computers to connect devices such as headphones or share data.


Blue Screen of Death! Referred to the error screen that appears on Windows operating system PC if something goes terminally wrong.


The process of creating a CD, DVD or Blu-Ray disc.


A method of adding a sense of depth to printed or screen-based images. Chromadepth makes red colours look closer than the page or screen and blues look further away. 


Content Management System: A 'website to build a website', designed to allow easy creation and categorisation of content. Many available for free, such as Joomla, XOOPS, Wordpress, Drupal etc.


Central Processing Unit. The 'brain' inside a computer (PC, tablet or smartphone) that performs calculations.


Cascading Style Sheets. A text file generally downloaded alongside a HTML web page containing styling information (such as the position of content, text styling etc).


'Distributed Denial of Service' Attack. A method of bringing a web server to a halt by bombarding it with fake page requests, thereby overloading it.


Digital Light Processing. A Texas Instruments process of projecting video images using a light source reflecting off of an array of tens of thousands of microscopic mirrors.

Dolby 3D

The proprietary system for 3D cinema projection from Dolby, this passive glasses variant uses filters that block different specific frequencies of red green and blue light for each eye, allowing full colour 3D to be produced without polarization. 


1. Disc Operating System - OS used in the 80's and 90's

2. Denial of Service - a form of attack, where a web server is flooded with fake requests in order to shut it down. (Also referred to as Distributed Denial of Service attack).


Desk Top Publishing. Software products such as Adobe InDesign, Microsoft Publisher and CorelDraw, which allow the user to design posters, brochures etc.


Digital Versatile Disc or Digital Video Disc. Can store 4.7GB or 8.5GB, depending on whether the disc is single or dual layer.


Electronic paper. Often used on e-reading devices such as Amazon Kindle and Pebble watch. E-paper is not as vibrant as other screensh, such as LED/LCD, but only requires power to change the image. As a result the battery lasts much longer than other technologies.


An Adobe product that allows you to build more functionality into a website, such as games or playing video. Being superceded by HTML5 and does not run on Apple's iOS.


Flash also describes a type of memory that stores information even when there is no power available. Used on USB sticks, memory cards, and to store BIOS information on the motherboard of any computer.


Measured in 1000's for disc storage and 1024's for RAM. 1 Gigabyte (GB) equals 1024 Megabytes. 1 Megabyte (MB) equals 1024 Kilobytes (KB).  1KB is 1024 bytes. 1 byte is one character or binary digit.


Graphics Processing Unit. Works alongside a CPU to take care of all screen processing.


Hard disc drive. A magnetic storage device found in PCs and laptops.

A standard for connecting high-definition video devices. Also includes built in encryption/copy protection.

Name given to a bug found in the OpenSSL encryption software in 2014. The nickname was given because it was found within the 'Heartbeat' part of the code.


HyperText Markup Language. The language that all web sites are displayed using.


Also referred to as interaxial. Horizontal displacement of the lenses of the cameras.


iOS. Formerly iPhone OS. Apple's proprietary operating system used on iPhones, iPods and iPads.


Java is a free programming language and computing platform first released by Sun Microsystems in 1995. Many applications and websites will not work unless you have Java installed.


JavaScript is a scripting language that was created by Netscape, originally known as LiveScript. JavaScript is a distant cousin of Java in that it is also an OOP language. Many of their programming structures are similar. However, JavaScript contains a much smaller and simpler set of commands than Java and is easier to understand for many.


'Crowd-Funding' website, where individuals or companies can promote a product and get people to back/fund it in exchange either for recognition or, most often, the end product at a discounted rate.


Measured in 1000's for disc storage and 1024's for RAM. 1 Kilobyte (KB) is 1024 bytes. 1 byte is one character or binary digit.


An operation system based on UNIX. Most Linux OS' are available to download free of charge.


Apple's brand for their computers, which run MacOS. Apple give names to their operating systems, such as Mavericks, Leopard, Lion etc.


Term given to software infected with viruses that aim to sell you products, often fake antivirus products.


Measured in 1000's for disc storage and 1024's for RAM. 1 Megabyte (MB) equals 1024 Kilobytes (KB).  1KB is 1024 bytes. 1 byte is one character or binary digit.


Optical Character Recognition. Term used for software that can scan a page of text and turn it from a digital image into an editable piece of text.


Object-oriented programming is a programming language model organized around objects rather than "actions" and data rather than logic. Historically, a program has been viewed as a logical procedure that takes input data, processes it, and produces output data.

Open Source

Denotes the license applied to software source code, meaning that anyone can freely download, copy or modify it for their own uses. This web site is built using Open Source tools.


Separation on the screen plane between left and right images of an object. Determines the perceived depth of objects relative to the screen plane.


Pretty Good Privacy. An email encryption program.


Pixels Per Inch. (Or Payment Protection Insurance, depending on context!)


Random Access Memory. A type of computer memory where any part of it can be accessed randomly. RAM is the most common type of memory found in computers and other devices, such as printers, smartphones and tablets. Measured in kilobytes, megabytes, gigabytes and terabytes.


The term used for a virus which encrypts a an infected PC's files and demands cash for the unlock code. Failure to comply within a given time period results in the files automatically being deleted.


A type of network connector.


Serial interface, now replaced by USB.


Term given to a virus which has the intention of sending back information such as keyboard strokes with the aim of finding usernames/passwords to commit fraud with.


Solid State Disc. Essentially this is a hard disc, but uses flash ram instead of magnetic material to store data. They are much faster than traditional hard discs, but also more expensive.


The lead person of the 3D crew. He/she oversees all the 3D alignment before the shooting begins and then during filming oversees the quality of the 3D output feeding comments to his crew.


Measured in 1000's for disc storage and 1024's for RAM. 1 Terabyte equals 1024 Gigabytes (GB). 1 Gigabyte (GB) equals 1024 Megabytes. 1 Megabyte (MB) equals 1024 Kilobytes (KB).  1KB is 1024 bytes. 1 byte is one character or binary digit.


Universal Serial Bus. Term used for the interface found on most computers and other devices to provide data connectivity and power charging. USB was a replacement for RS232.

Virtual Machine

Term used to describe software that can create a virtual computer inside your existing operating system. Multiple VMs can run on a single computer independently of each other and completely securely - if one gets corrupted/hacked it is totally separate from any others or the host PC.


Malicious code, often attached or hidden within other 'hosts', such as an application or zip file. The effects of virus can differ greatly, from deleting files through to causing your PC to run slow.


Microsoft's Operating system. Originally launched in the early 1990's to counteract Apple's graphical OS.


World Wide Web

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Cheshunt Computer Club

Laura Trott Leisure Centre
Windmill Lane, Cheshunt, Hertfordshire  EN8 9AJ