AnchorReporter A basic personal digital assistant can keep track of thousands of addresses and phone numbers, as well as your calendar.
More expensive ones can store photos, play games, track expenses and much more.
It seems like you see personal digital assistants everywhere these days. Ones from Palm, Handspring and Sony have Palm Operating System. With those, you can't use regular writing. They're all single stroke characters. Ones from Casio, HP, Compaq and others use a form of Microsoft windows and are called Pocket PC's.