Keith said:

Other than having the ability to add different barrels what is the
mechanical difference between the Digital camera and the DSLR?

I understand the difference between the film 35 mm and the 35mm slr but a
slr ccd, to me, should be the same except maybe for the barrel (lenses)?

Why would a mirror be needed on a digital since both, digital and dslr is
taking info, data, from the ccd, right, or wrong?  I would suppose there is
a simple and logical answer.
Keith