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| How PDAs work - http://electronics.howstuffworks.com/gadgets/travel/pda.htm Many people own PDAs but don't know how they work. Find out how these gadget work. You will find interesting things by learning about these small gadgets. |
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| PDA in space - http://www.space-travel.com/reports/Personal_Digital_Assistants_In_Space_999.html Read about how the PDA's have been used in space and how they will be used |