16位运算器，用实例化模块链接，是采用Verilog hdl编程，是实现fpga的代码-16-bit arithmetic unit, with links to instantiate module is using Verilog hdl programming, is to achieve the fpga code

4位运算器采用sn74181，是采用Verilog hdl编程，是实现fpga的代码，实现了其模块的48种功能，-4 operator uses sn74181, is the use of Verilog hdl programming, is to achieve the fpga code, achieved its module 48 kinds of functions,