OpenPGP Smartcard Advantages

[David]

Hello,

I am new to smartcards and I have a couple of questions about the
OpenPGP smartcard from www.g10code.de

1. What are the advantages of this smartcard for storing my keys over
other external media (especially if connected to an unsafe computer)?

2. Is the signing / encrypting done inside the card or the computer?
(If connected to a compromised computer access to my private key can
compromise the key itself.)

Thank you for your help.

David
-- 
"The difference between fiction and reality? Fiction has to make sense."
   - Tom Clancy -