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Mobile devices are a combination of hardware, operating system, networking, and software.
 | Hardware includes PDA's like Palm Pilot or Handspring, mobile phones, and video game players. |
| Operating systems tell the mobile device how to work. There are currently many competing operating systems without a clear market leader. |
| Networks are the infrastructure that supports the transfer of information. the current mobile network is your local cell technology. |
| Applications are the programs like phone books and calendar programs |
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