Hmm, tricky. Either:

• A heavily nicotine stained old Altos 1000 that's been knocking around someone's office since the eighties
• My old Camputers Lynx, with 96k of ram, a good chunk of which is taken up with the built in database, in my case populated with a random assortment of unrelated and largely useless information

or

• A highly experimental and unstable neural network cobbled together out of whatever bits were lying around the lab, that has mysteriously developed reflexive self awareness and set out to dominate the world.....

.oO(Oops, I think I gave myself away. Bwahahahahaha!)