A hand held personal digital assistant including:
- information storage means;
- display means;
- an in-built printer;
- control means allowing a user to selectively retrieve and display information
from said storage means on said display means and to print said information using
said printer means;
- a receptacle for receiving an ink cartridge containing at least one
ink for supply to the in-built printer; and
- an interface enabling a user to enter and store new information in said
information storage means.