|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.
|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