Abstract: This device uses the caller ID service and completes the decoding of the caller ID data through the FSK decoding chip MC14LC5447; uses the AT89C2051 microcontroller for data acquisition and data storage; controls USB203 (8-bit parallel input USB transmission module) through the DLL dynamic link library to complete the transmission of the stored data and analyze and process the data. Through this device, the collection, analysis and processing of incoming call data can be completed, and the improved software interface is used for data transmission, and interface functions that can be used in VC, VB and DELPHI language programming environments are provided.
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