Serial module (Serial Module) is a hardware module for serial communication, which provides the ability to communicate with other devices. Serial port modules are usually used to exchange data between devices or systems and computers, embedded systems or other external devices.
The serial port module can realize the sending and receiving of serial data, and use a specific serial port protocol for communication. It usually includes a serial port interface chip, logic circuit and external interface (such as RS-232, RS-485 or TTL level signal, etc.), in order to connect with different types of equipment.
The following are some common serial port modules:
RS-232 Module: RS-232 is a common serial port standard used for serial communication between computers and external devices. The RS-232 module can convert serial data into RS-232 level signal, and provide appropriate interface and level conversion circuit.
RS-485 Module: RS-485 is a multipoint communication protocol suitable for long-distance and anti-interference serial communication in industrial environments. RS-485 modules usually have RS-485 level shifting and driving circuits to communicate with RS-485 bus or other RS-485 devices.
TTL serial port module: TTL level serial port module is a module for serial communication with TTL (logic level) devices. It is usually connected with other TTL devices (such as microcontrollers, sensors, etc.) through TTL-level signal pins (such as TX, RX).
These serial port modules can be widely used in various fields, such as embedded systems, communication equipment, automation control systems, sensor networks, etc. Through the serial port module, the device can exchange and control data with other devices through serial communication, and realize functions such as data collection, remote control, and reading of sensor data.
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