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Radio
An electronic system of transmitting transient image of fixed or moving object together with sound over a wire or through space by apparatus that convert light and sound into electrical waves and reconvert them into visible light rays and audible sounds. -
Television
A system for transmitting visual image and sound that are reproduced on screens chiefly used to broadcast programs for entertainment information and education. -
Cellphone
A phone with access to a cellular radio system so it can be used over wide area without a physical connection to a network a mobile phone. -
Facebook
Facebook is defined as an online social networking website where people can create profiles share information such as photos and quotes about themselves and respond or link to the information posted by others. -
Instagram
Instagram was started in San Francisco by Kevin Systrom and Mike Krieger who initially tried creating a platform similar to foursquare but then turned their attention exclusively to photo sharing.