old computer tower???

I received two old towers from a local guy cleaning out his garage. They are radio shack tr-80's with a whopping 5 megs one needs a key to start it and i don't have it.Both came with power cords and a couple of ribbon wires attached to them. I put them on *bay 4 or 5 times and nobody wanted them. It seems only working complete units are selling and not just the towers. I was wondering what i should do with these? I am a curious person so it's kinda killing me not to tear one open and see the old chips and hard drive plenty of gold pins I can see in the back ports to.