Many modern oscilloscopes are equipped with RS-232 ports. Today, RS-232 has been largely replaced by other faster and more energy-efficient protocols in the PC industry, such as the USB.ĭespite this, RS-232 ports are still commonly used in industrial devices, such as laboratory equipment, variable-frequency drives (VFDs), networking equipment, embedded systems, and even PLCs.įigure 1. It is one of the oldest communication protocols in the computer industry, dating back to the 1960s when RS-232 was created.įor decades, RS-232 was one of the most widely used interfaces in personal computers, allowing the connection of keyboards, mice, and other peripherals to the main CPU. ![]() Serial communication is a data transmission protocol in which information is sent in a series, one bit at a time.
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