I did look it up using the code number, I just cant remember what it was now. It probably was just memory like you said. I read the datasheet because I was so curious as to why it had a window, it mentioned about sheilding it because a few hours of UV would erase it. I got a lot of parts from those because they were all in sockets where I could just pull them out. It was a big pile of them too. But almost all the chips were single and quad comparators, I pulled that stuff before Id really learned anything about electronics, so now Ive got a large jarfull of iffy quad comparators, and 2 or 3 larger chips.