This paper describes the using situation of the existing manual operation press.On this basis,it puts forward intel-ligent press programs and the principle components,and emphasises on the development hardware circuit design of the weak control systems.The paper introduces the composed principle of the acquisition and control system based on USB interface,then discusses in detail the design of each unit circuit,including USB communication circuits,analog signal conditioning cir-cuit,analog output amplifier circuit and digital output driver circuit.In the end,it simplely introduces the software design flow.