What is a printer used for?
You can hook more than one printer up to your system. Your
default printer is basically the one that your document
automatically goes to when you click on print. Whichever printer
you use the most is the one you want to set as your default. It is
usaully going to be the printer that you use to do basic tasks like
print emails, letters, or pages that you just want a hard copy of.
You would leave more specialized printers or printers that use
expenive inks as printers that you switch to, instead of your
default.