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        Computers in Language, Art, and Communication (continued) Computers 
          and Communication TelecommunicationWith the proliferation of computer networks in particular, computers 
          have transformed telecommunication systems.
 A growing number 
          of telephone systems (including cellular telephone systems) are now digital. 
          Digital telephone answering systems record messages on memory chips 
          instead of on cassette tapes. VoIP (Voice-over-Internet Protocol) services such as Webcams—digital 
          cameras connected to computers that are linked to the Internet—enable 
          the transmission of live pictures and video. When Internet 
          phone technology and webcams are combined, videoconferencing 
          is possible.  Cable 
          television companies are moving to digital cable, and the 
          small satellite dishes used in digital satellite systems (DSS) seem 
          to sprout up on rooftops overnight. Services such as Tivo 
          and ReplayTV 
          record television programs on computer hard drives rather than on video 
          tape. Digital video cameras capture video in digital format and enable 
          video editing on a personal computer. Websites such as the video business.
 Beginning in 1994 
          (and continuing each year since), computers have outsold televisions 
          in the U.S. Online 
          CommunicationThe inventors of what became the Internet did not even have 
          e-mail in mind when they developed the first computer 
          network, but e-mail quickly became the most popular feature of the Internet. 
           The @ symbol itself 
          has become a cultural icon: one is just as likely to glimpse it on city 
          buses, cereal boxes, and t-shirts as in an e-mail message.
  In 
          the past couple of years, the popularity of e-mail has been challenged 
          by the arrival of instant messaging technologies. Although 
          Internet chat systems have enjoyed varying degrees 
          of popularity since the late 1980s, IM has grown at 
          an explosive rate. IM technology gained widespread publicity when America 
          Online's IM service, "Instant Messenger," was featured in 
          the 1998 Warner Brothers film"You've 
          Got Mail," starring Meg Ryan and Tom Hanks.
  Text messaging—the 
          sending of a small amount of text to appear on someone else's cell phone—is 
          eclipsing both e-mail and instant messaging in popularity.
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