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Abstract
Serial communication is the process of sending data sequentially one bit at a time, over a communication channel or computer bus. RS-232 is a standard for serial binary data transfer between a data terminal equipment (DTE) and a data circuit-terminating equipment (DCE), commonly used in computer serial ports. Primary aim of the work is the mapping of the magnetic field within a magnet (Magnet having the hollow cylindrical shape). In this scheme, one computer as Master terminal and another as Slave terminal are taken for communication.