thnx to huzaifahm again.
in my design, the columns of the two block(8x8 dot mtrx) are conneted to 8 pin of the ucontrlr thrgh buffers(i.e. the 16 column are connected to 8 pin).at present, the two set of rows(8 each) are connected to 2 port of the ucontroller(i.e. to 16 pin of the ucontrlr). now i m sending data from ucontrlr to the 16 rows serially(1st row,2,3.....15,16,1,2,....).
according to ur suggestion,i should use two controller for the two set of rows(may be i misunderstood).can u plz specify the type of controller?and also plz mention where to connect the rows(2 set,8row each) and the columns(2 set,8clmn each,presently connected together in 8pin of the ucon.).
plz mention the sites(if any),where i wl get the details abt connection of this design with controller.