Also what is it? How does it work? Is it an old machine? A data entry clerk job said this was something I would be operating. I have never even heard of it. I've looked it up on the internet and I can find nothing other than other people asking what one looks like.

It's something that punches holes in paper. You will probably not work the perforator. Most likely, you will be putting data into a unit, that will then be used by someone who operates the machine.

Even if you do operate the machine, it will probably be connected to your unit like a printer would be to your PC.

Good luck with your new job.

p.s. someone please report his ahmed clown above me with his SPAM.