A lot of integrated operational amplifiers are used in analog signal processing. When an analog signal processing circuit is designed and manufactured, its function of processing analog signal cannot be changed at will. When different function signal processing circuits are needed, the signal processing circuit must be redesigned, while the previously designed circuits cannot be used effectively. This greatly increases the workload of circuit design, and also greatly increases the workload of circuit design A great waste of resources.<br>Therefore, a general analog signal processing circuit is designed to realize different analog signal processing functions by configuring different components, such as amplification, summation, difference, integration, differentiation, etc. Use Multisim software to design and simulate to verify whether it can meet various functional requirements. Use Altium designer software to design general PCB. The combination mode of signal circuit, three-dimensional assembly structure and function expansion of hardware circuit are designed.<br>
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