"Here's the answer according to the New York Institute of Photography. X-ray's don't harm cameras. They harm film. So if your camera is loaded with film - and it should be - your concern should be for the film in it, not for the camera itself.
Will airport X-rays harm your film? Yes, they can...but you usually don't have to worry, according to NYI. Here's why. The X-ray machines in all American airports and most overseas international airports will not harm your film, provided your film is X-rayed just once or twice. So if you're flying to Disneyland or Hawaii or London and back, your film should not be harmed by the airport X-ray machines.
A problem arises, however, if your film is X-rayed more than a couple of times. X-rays are cumulative. The second dose adds to the first. The third to the second. And so on. Eventually, your film will be harmed by the accumulation of X-rays. So if you're going on a multi-leg trip, beware. Insist that your camera and film be hand-inspected on each leg of your journey. Security personnel are required to heed your request in the U.S., and the inconvenience is minor."
(If you are paranoid like I am however, you can buy a lead lined bag in any camera store to transport your film in. Make sure to take it in your carry on, it's something you don't want to lose!)
Bringing a digital camera is no problem whatsoever. Where you may run into problems is if you are planning on upload pictures from Europe.
In order to do so, you will have to find a decent computer and somehow talk the person into letting your download your software, which you will have to bring with you. You'll also need your connection cables. If you somehow do get this organized, expect it to be extremely slow going as finding a quick internet connection can often be difficult.
If you are only going for a short period of time, consider investing in a couple memory cards rather than deal with the hassle of uploading.