<human>: What is the difference between an e-reader and a tablet computer?
<bot>: The main difference between an e-reader and a tablet computer is size. An e-reader is typically smaller than a tablet, with a screen that is about 5 to 8 inches across. E-readers are designed for reading digital books, magazines, and other texts, while tablets are more general purpose devices that can be used for many different things including web browsing, playing games, watching videos, listening to music, taking photos, etc.