handheld devices;

Handheld devices:

http://en.wikipedia.org/wiki/Mobile_device

http://mobiledevices.about.com/od/glossary/g/What-Is-A-Mobile-Device.htm

http://www.webopedia.com/TERM/H/hand_held_computer.html

PDA

http://en.wikipedia.org/wiki/Personal_digital_assistant

http://www.wisegeek.com/what-is-a-pda-personal-digital-assistant.htm

http://www.pdaed.com/vertical/tutorials/whatispda.xml

http://www.ehow.com/list_6012597_advantages-vs_-disadvantages-owning-pda.html

http://wiki.answers.com/Q/Advantages_and_Disadvantages_of_pda's

Digital Camera

http://en.wikipedia.org/wiki/Digital_camera

http://www.buzzle.com/articles/advantages-and-disadvantages-of-digital-cameras.html

Camcorder

http://en.wikipedia.org/wiki/Camcorder

http://ezinearticles.com/?Benefits-of-Using-Camcorders&id=3060542

http://wiki.answers.com/Q/What_is_a_camcorder

http://answers.yahoo.com/question/index?qid=20090225194046AAb3keK

http://wiki.answers.com/Q/What_are_the_advantages_of_a_digital_camcorder

Smartphone

http://en.wikipedia.org/wiki/Smartphone

http://www.phonebuddy.com.au/mobile-phones/what-is-a-smartphone

http://cellphones.about.com/od/smartphonebasics/a/what_is_smart.htm

http://smartphones-magazine.com/2011/01/smartphone-advantages-and-disadvantages/

http://www.ehow.com/list_7468796_disadvantages-smartphones.html

Pager

http://en.wikipedia.org/wiki/Pager

http://answers.yahoo.com/question/index?qid=20080801225701AAr3gNH

GPS

http://en.wikipedia.org/wiki/GPS_navigation_device

http://www.ehow.com/list_5912431_advantages-disadvantages-gps-systems.html

Tablet Computer

http://en.wikipedia.org/wiki/Tablet_computer

http://www.sitetube.com/miscellaneous/what-tablet-pcs-can-do-for-you.shtml

http://teknoise.com/2011/04/06/laptop-vs-tablet-computers-ipad-advantages-and-disadvantages/

How it works

http://electronics.howstuffworks.com/smartphone1.htm

http://www.ehow.com/how-does_4618345_smart-phone-work.html

http://www.ehow.com/how-does_5004871_a-smartphone-work.html

Future Directions

http://www.youtube.com/watch?v=Zto6aTZM9t0

http://research.nokia.com/morph