Recently, but that's not relevant. Said computer is still in use, controlling a nuclear reactor. It's a replica of a 1972 computer. (36 years!) It has 64KB of RAM, but since it's only word addressable, it has only 32K addresses. I can't remember what it has for disk space, but we're talking about a few of MB max. (I think 3MB up from an original 1MB.)

It has a custom made OS called "the Executive" or "EXEC" after it's file name. You can't exactly load linux on it. EXEC provided I/O functions and some library functions. A file system was deemed unnecessary.

Alarming (logging) is done to a CRT (which won't clear even if something happens to the computer) and to a printer. The computer can also talk to PC that pretends to be a paper tape device.