Content on this page requires a newer version of Adobe Flash Player.

Get Adobe Flash player

From the early 1900s to the 1950s, punched cards were the primary medium for data entry, data storage, and processing in institutional computing.

Commercially available since the late 1920s, the television set has become commonplace in homes, businesses and institutions, particularly as a vehicle for advertising, a source of entertainment, and news.

Facebook is a social networking service and website launched in February 2004 that has more than 900 million active users worldwide.