An eBook is an electronic book that an individual can read digitally on the computer, laptop screens, and even devices called eBook readers.
Technically any device that can display lengthy text can work as an eBook reader, including PDAs and some cell phones. The difference between these devices (not dedicated solely to displaying eBooks) and the more formal "eBook readers" that were designed with eBooks in mind is how well they work. EBook readers like the Kindle were meant for reading on, and are therefore blessed with longer battery life and high tech features that make reading an eBook easier and more enjoyable. Sure - you can read eBooks on your PDA, but the screen will not be very big and you will not be utilizing the coolest feature of eBook readers-something called E Ink. (What is an eBook and how does it work)