The methods of adopting fpga to realize the function of counter , and adopting verilog hdl hardware description language to design every function modules , not only makes the whole design more compact and stable , but also make the alteration of the circuit ’ function merely need to alter the software according to the practical task requires , and needn ’ t alter the hardware connection of the circuit 在計數器功能的實現上采用fpga ( fieldprogrammablegatearray ) ,利用veriloghdl ( hardwaredescriptionlanguage )語言編寫了各個功能模塊,不僅使整個設計更加緊湊、穩定且可靠,而且可以根據實際的任務要求,在無需改變硬件電路板的情況下,通過修改硬件描述語言程序,即可修改電路功能。