BLOCK MODELING INPUT/OUTPUT BUFFER HAVING FIRST AND SECOND BLOCK OF BLOCK DIAGRAM FOR PASSING A PLURALITY OF DATA BETWEEN SAID FIRST AND SECOND BLOCKS

In one embodiment, a data element is passed between a first block and a second block of a block diagram during execution of the block diagram. The first block and the second block negotiate use of a particular input/output (I/O) type from a plurality of available I/O types. The particular I/O type is used with at least one I/O buffer employed in passing the data element between the first block and the second block. The first block may produce a signal representing the data element. The signal is received at the I/O buffer and the data element stored according to the particular I/O type. Subsequently, the data element may be read from the I/O buffer by the second block, which performs an operation, the result of which is used when the block diagram is executing.