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A memory card is an electronic data storage device which uses flash memory for storing digital content. They are widely used in a array of electronic devices, some of these include mobile phones, digital cameras, mp3 players, laptops and PCs. These are small re-recordable devices, that can retain data without power. The most abundant type of memory card in use today is the SD card. This comes in capacities up to 64 GB. However there are other types of memory cards in use which have a variety of roles in today's society.
 

The day of mobile phones being just that has gone. With current mobile phones containing such features as memory databases, cameras, MP3 players, video players, and with mobiles becoming a fashion accessory rather than a tool, the mobile phone accessory industry has exploded.
 

A video game involves a person or computer interacting with a user interface, producing a visual image on a visual output device (monitor, TV, etc). Video games can be categorised into platforms: personal computers, video game consoles, like PS3, Wii, Xbox 360; handheld devices and arcade games. Along with a visual output there is also a sound output through speakers or headphones (see computer accessories) which add to the gaming experience. Almost all video games have some form of controller which allows the user to control certain things and this is seen and heard through the visual output and speakers or headphones. Controllers come in all shapes and sizes, although in modern day most of these controllers are now wireless and lightweight like the PS3 controller which has sixaxis and dual shock. This allows a vibration or feedback to be felt through a controller and adds to the gaming experience.
 

Video game accessories are a piece of hardware that is required to use a video game console, or one that enriches the video game's play experience. Essentially, video game accessories are everything except the console itself, such as controllers, memory, power adapters (AC), and audio/visual cables. Most video game consoles come with the accessories required to play games out of the box (minus software): one A/V cable, one AC cable, and a controller. Memory is usually the most required accessory outside of these, as game data cannot be saved to compact discs. The companies that manufacture video game consoles also make these accessories for replacement purposes (AC cords and A/V cables) as well as improving the overall experience (extra controllers for more players, or unique devices like light guns and dance pads)
 

There are two types of media players: a portable media player (PMP) which is a device such as the Apple iPod, Zune or Create Zen; and a HDD media player which requires a hard drive. If you want an easy way to store all your videos (both DVDs or video files), pictures and music in one place and be able to access them without your computer or laptop then a HDD media player is the best solution.
 

Computer accessories, also known as peripherals are a device that connects to a computer but is not part of it. A peripheral expands the computers functionality without becoming a part of the computers architecture.
 

The iPod is a portable media player designed and marketed by Apple and launched on October 23, 2001. As of June 2010, the product line-up includes the hard drive-based iPod Classic, the touchscreen iPod Touch, the video-capable iPod Nano, and the compact iPod Shuffle. Former iPod models include the iPod Mini and the spin-off iPod Photo (since reintegrated into the main iPod Classic line). iPod Classic models store media on an internal hard drive, while all other models use flash memory to enable their smaller size (the discontinued Mini used a Microdrive miniature hard drive). As with many other digital music players, iPods can also serve as external data storage devices. Storage capacity varies by model, ranging from 2 GB for the iPod Shuffle to 160 GB for the iPod Classic.
 

The iPad is a tablet computer designed and developed by Apple. It is particularly marketed as a platform for audio and visual media such as books, periodicals, movies, music, and games, as well as web content. At about 700 grams, its size and weight are between those of most contemporary smartphones and laptop computers. Apple released the iPad in April 2010, and sold 3 million of the devices in 80 days
 

The iPhone (pronounced /ˈaɪ.foʊn/ EYE-fohn) is a line of Internet and multimedia-enabled smartphones designed and marketed by Apple Inc. The first iPhone was introduced on January 9, 2007. An iPhone functions as a camera phone, including text messaging and visual voicemail, a portable media player, and an Internet client, with e-mail, web browsing, and Wi-Fi connectivity. The user interface is built around the device's multi-touch screen, including a virtual keyboard rather than a physical one. Third-party applications are available from the App Store, which launched in mid-2008 and now has well over 200,000 "apps" approved by Apple. These apps have diverse functionalities, including games, reference, GPS navigation, social networking, and advertising for television shows, films, and celebrities.