In this paper we compute the minimal number of Darboux chart needed to cover
a Hermitian symmetric space of compact type in terms of the degree of their
embeddings in CPN. The proof is based on the recent work of Y. B.
Rudyak and F. Schlenk [18] and on the symplectic geometry tool developed by the
first author in collaboration with A. Loi and F. Zuddas [12]. As application we
compute this number for a large class of Hermitian symmetric spaces of compact
type.Comment: 8 page