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Ironically, it's a very old term for a powerpoint presentation. Presentations used to be done with actual photographic slides in a projector. They were stored in a deck of slides.

I only know this from Mad Men.

Hijacking this because you're top comment and everyone is talking about the origin of the term (the thing you load into a projector back in the days of physical slides), but no one's answering the actual question as intended:

"Slide Deck" is the term used for the series of slides shown during a presentation, but "Presentation" refers to the whole performance, including non-slide elements like speeches and demos

A slide deck is the analogue version of a PowerPoint.

The deck is the rotating ring that you drop your slides into, then project them on the wall with what is essentially just an overhead projector designed to take small vertical slides of film loaded into the deck, instead of just using transparent sheets.

You'd design all your little film slides, arrange them in order in the deck (think, deck of cards). The deck is what let you automatically swap between slides by pressing the remote to rotate the deck and reveal the next slide to the projector lens.

I'm 32 but my school was broke as fuck so we were still using overheads and slide decks in 2005.

It's some business consulting shit.

I'm in IT, I hear this term every week.

Nah nah, HyperCard was the Apple shit.

27, never heard slide deck

Often shortened to deck. Sounds similar enough to dick that you can just say dick and no one notices. You get to go around taking about showing people your dick all the time then giggle about it.

I'm a 32 year old teacher and I want an overhead projector.

A dry erase transparency is much easier to write on than the white board. My macro handwriting is awful, students can barely read what I write on the board. So I always end up writing on a peice of paper on my desk, and I have my phone on a tripod so I can get a "top down shot" of me writing on the paper, then I screen cast that to the smart board.

It works, I can write legibly by writing in a normal size, and then enlarge it for the class to read fairly quickly.... Once all the cameras and casting is set up.

But it would be so much easier to just have an overhead projector, a few transparencies and a dry erase marker. Roll it out, plug it in, aim and focus the lens, then I'm done. Plus then if the internet goes out I could still use the board!

Not quite...the term has actually come back around again.

My experience the last few years is that being old makes everything you say sound old.

Overhead projectors don't exist anymore, they've been replaced by video projectors mounted overhead.

34 and we had over head projectors and slide projectors as well in elementary.