  In these notes, we define a new simplicial structure on a connected
multiplicative operad and call it connected multiplicative simplicial operad
(for short; simplicial operad). Next we introduce on this simplicial operad a
brace algebra structure analogous to that of Gerstenhaber-Voronov that we call
right brace algebra structure. This permits us to obtain on the operad with the
above mentioned properties a bicomplex structure one of whose two differential
operators is a coboundary and the other one is a boundary. Moreover we define
on one hand on the above simplicial operad together with its right brace
algebra structure, two distinct products up to a sign respectively called
dot-product and odot-product. Then we show that the coboundary and the boundary
together with the odot-product provide to this simplicial operad two distinct
differential graded algebra structures. On the other hand we obtain through the
Alexander-Withney map, a differential graded coalgebra structure on a
simplicial operad. We end by illustrating our constructions with some examples
