A real-time serial COM port monitor (or serial port sniffer) is a software or hardware utility designed to intercept, view, log, and analyze data flowing through serial interfaces like RS232, RS422, and RS485. Engineers, embedded systems developers, and IT technicians use these tools to debug firmware, verify protocol communication, and test connections between a computer and a peripheral device (like sensors or industrial PLCs) without halting the system. 🛠️ Core Capabilities of Real-Time Monitors Serial Port Monitor – HHD Software
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