Tablet computers [, MP3 players, mobile phones, and smart phones; computer software for instant messaging, sending and receiving emails and contact information, schedule sharing and contents sharing services; computer software for managing and organizing various digital reading contents, namely, e-books, e-newspapers, thesis, and e-magazines; computer software for purchasing, subscribing, downloading, playing or listening to digital reading contents, namely, e-books, e-newspapers, thesis and e-magazines and electronic games; computer application software for use in voice recognition; computer software for use with satellite and Global Positioning System (GPS) navigation systems for navigation, route and trip planning, and electronic mapping; computer software for suggesting the most suitable pen-input applications for the mobile device; computer software for viewing and downloading electronic maps; computer software embedded on portable phones and portable computers that allows users to play and download electronic games, listen to and download ring tones and music, and view and download screen savers and wallpapers; computer software that edits daily activities, address books, calendars, memos, and multimedia contents stored in mobile devices; computer software that enables users to program and distribute audio, video, text and other multimedia content, namely, music, concerts, videos, radio, television, news, sports, games, cultural events, and entertainment-related and educational programs via communication network; computer software to receive, transport, encode, decode, decrypt, encrypt, transmit, multiplex, de-multiplex, and manipulate video and other data in digital format to deliver television and other video programming to appropriate video devices for distribution of television programming for viewing on television sets; digital cameras ]