The document contains information about market share of mobile operating systems from 2010 to 2011. It shows that Android increased its market share from 25.3% in 2010 to 52.5% in 2011, while Symbian and RIM decreased. The document also provides a brief history of communication technologies from early speech and symbols to modern wireless networks and smartphones. It outlines the evolution of visual, audio, and electrical communication signals over time.
25. End Users
• School Kids (12 – 18 )
• College youth (18 – 24)
• Working class
• Business Class
• Labour Class
• Literate and Illiterate
• Senior Citizens
• Physically Challenged
• People from different Income Group
• Rural / Urban