input process
4.Its main content as follows:1、 The paper applied the theory of marginal cost and income, non-difference curve and the rate of marginal substitution to ascertain the problem of the most excellent safety input and reasonable distribution, then applied Douglas production function to settle the substitute problem of each safety input during the process of production input.
7.The paper proposes a five-input adder module with dual carry-out ,which can process more information.

