Old fashioned film vs. digital pictures/video?

When you use a plain, non-digital projector to show a picture or movie that was never digitally edited or processed, would it become blurred after a while like with digital cameras? I'm just asking out of just wondering from something I saw in school, but there are some people who could use the information out there.

In case anyone didn't understand,by blurred, I mean will it have pixel-type problems?

no, it wont

With 35mm film (either slides or negatives), the maximum print size is roughly 8x12 inches. Ten-megapixel digital SLR cameras can achieve the exact same resolution, and cameras like the 16-megapixel Canon 1Ds Mk2 are significantly better than 35mm film. This is 300dpi print quality, where you can press your nose to the image and still make out tons of detail. If you need prints that are significantly larger, you should be using medium/ large format cameras. This was true for film, and it's still true for digital.
The reason you can project slides to several feet, is because you view them from an appropriate distance! I can assure you that if you walk up to the screen and inspect minute details, they will look like crap.