Integrable systems on the lattice and orthogonal polynomials of discrete variable

Some particular examples of classical and quantum systems on the lattice are solved with the help of orthogonal polynomials and its connection to continuous models are explored.Comment: LaTeX, 10 pages, Comunication presented to the 6th International Symposium on Orthogonal Polynomials, Special Functions and their Applications, Rome, June 2001 (late submission to arxiv.org