What type of control method is RS-232?

RS-232 is classified as a serial control method. This means that it transmits data one bit at a time over a single communication channel. In contrast to parallel communication, which sends multiple bits simultaneously across multiple channels, serial communication like RS-232 is well-suited for long-distance communication because it reduces the number of wires needed and minimizes the complexity of connections.

Serial communication is characterized by its efficiency in transmitting data over longer distances with less interference, making it a common standard in various data communication applications. RS-232 specifically uses defined voltage levels for signaling and requires careful attention to the physical connector types and cable specifications to ensure proper communication between devices. This makes it a foundational protocol widely used in computer and audio-visual equipment for control and communication.