Serial interface is referred to as serial port, also known as serial communication interface or serial communication interface (usually referred to as COM interface). It is an extended interface using serial communication. Serial interface refers to the sequential transmission of data one by one. It is characterized by simple communication lines. As long as a pair of transmission lines can realize two-way communication (you can directly use the telephone line as a transmission line), the cost is greatly reduced. Especially suitable for long-distance communication, but the transmission speed is slow.
Serial interface refers to the sequential transmission of data one by one. It is characterized by simple communication lines. As long as a pair of transmission lines can realize two-way communication (you can directly use the telephone line as a transmission line), the cost is greatly reduced. Especially suitable for long-distance communication, but the transmission speed is slow. The communication method in which the data of one piece of information is transmitted in order by bit is called serial communication. The characteristics of serial communication are: the transmission of data bits, in bit order, at least one transmission line can be completed; the cost is low but the transmission speed is slow. The serial communication distance can range from a few meters to several kilometers; according to the direction of information transmission, serial communication can be further divided into simplex, half-duplex and full-duplex.
The concept of serial communication (Serial CommunicaTIons) is very simple, the serial port sends and receives bytes in bits. Although slower than parallel communication in bytes, the serial port can receive data with one line while using one line. It is simple and capable of long distance communication. For example, when IEEE488 defines the parallel traffic state, the total length of the specified device line shall not exceed 20 meters, and the length between any two devices shall not exceed 2 meters;
For the serial port, the length can reach 1200 meters. Typically, the serial port is used for the transmission of ASCII characters. Communication is done using three lines, which are ground, transmit, and receive. Since serial communication is asynchronous, a port can send data on one line while receiving data on another line. Other lines are used for handshaking, but they are not required. The most important parameters for serial communication are baud rate, data bits, stop bits, and parity. These parameters must match for the two ports that are communicating.
Serial communication refers to a communication method between a peripheral device and a computer to transmit data by bit through a data signal line, a ground line, a control line, and the like. This communication method uses less data lines and can save communication costs in long-distance communication, but its transmission speed is lower than parallel transmission.
The serial port is a very common device communication protocol on a computer. Most computers (excluding laptops) contain two RS-232 based serial ports. The serial port is also a common communication protocol for instrumentation equipment; many GPIB-compatible devices also have an RS-232 port. At the same time, the serial communication protocol can also be used to obtain data of the remote acquisition device.
RS-232 (ANSI/EIA-232 standard) is a serial connection standard on IBM-PC and its compatible machines. Can be used for many purposes, such as connecting a mouse, printer or Modem, but also to industrial instrumentation. For the improvement of driving and wiring, the transmission length or speed of RS-232 in practical applications often exceeds the standard value. RS-232 is limited to point-to-point communication between the PC serial port and the device. The maximum distance for RS-232 serial communication is 50 feet.
Serial interface refers to the sequential transmission of data one by one. It is characterized by simple communication lines. As long as a pair of transmission lines can realize two-way communication (you can directly use the telephone line as a transmission line), the cost is greatly reduced. Especially suitable for long-distance communication, but the transmission speed is slow. The communication method in which the data of one piece of information is transmitted in order by bit is called serial communication. The characteristics of serial communication are: the transmission of data bits, in bit order, at least one transmission line can be completed; the cost is low but the transmission speed is slow. The serial communication distance can range from a few meters to several kilometers; according to the direction of information transmission, serial communication can be further divided into simplex, half-duplex and full-duplex.
The serial interface is a device that can convert parallel data characters from the CPU into a continuous serial data stream and convert the received serial data stream into parallel data characters for the CPU. The circuit that generally accomplishes this function is called a serial interface circuit.
Serial communication block diagram Serial port communication refers to a communication method between a peripheral device and a computer to transmit data in a bit by data signal line, ground line, control line, and the like. This communication method uses less data lines and can save communication costs in long-distance communication, but its transmission speed is lower than parallel transmission.
The serial port is a very common device communication protocol on a computer. Most computers (excluding laptops) contain two RS-232 based serial ports. The serial port is also a common communication protocol for instrumentation equipment; many GPIB-compatible devices also have an RS-232 port. At the same time, the serial communication protocol can also be used to obtain data of the remote acquisition device.
RS-232 (ANSI/EIA-232 standard) is a serial connection standard on IBM-PC and its compatible machines. Can be used for many purposes, such as connecting a mouse, printer or Modem, but also to industrial instrumentation. For the improvement of driving and wiring, the transmission length or speed of RS-232 in practical applications often exceeds the standard value. RS-232 is limited to point-to-point communication between the PC serial port and the device. The maximum distance for RS-232 serial communication is 50 feet.
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