What is the difference between the interface of the ticket printer? The following small series analyzes for you:
In order to meet the needs of different printing environments, the interface type of the ticket printer has been developed very richly. Different printers have parallel port, serial port, network port and USB port for users to choose, but we can easily ignore these small interfaces for office. The impact of efficiency and cost. Now let's take a look at the differences between these interfaces.
The parallel port is also called the parallel interface. At present, the computer is basically equipped with a parallel port, and the parallel interface is mainly used as a printer port, and a 25-pin D-shaped connector is used. The so-called "parallel" means that 8-bit data is transmitted simultaneously through parallel lines, so that the data transfer speed is greatly improved, but the length of the line for parallel transmission is limited, because the length is increased, the interference is increased, and the data is prone to error and no Suitable for printing environments such as kitchens and printing devices and computers.
The serial port is called the serial interface. Today's PCs generally have two serial ports COM 1 and COM 2. The serial port differs from the parallel port in that its data and control information are transmitted one by one. Although this speed will be slower, the transmission distance is longer than the parallel port, so the serial port should be used for long distance communication. Usually COM1 uses a 9-pin D-shaped connector, also known as the RS-232 interface, while COM2 uses an old-fashioned DB25-pin connector, also known as the RS-422 interface. This interface is already very Use less.
Compared with the bulky awkwardness of the parallel interface, the square USB interface that is common on printers is now much smaller and more compact. The USB interface has a wide range of features and can be hot swappable. That is, when the user uses the external device, it does not need to turn off the camera and then turn on the computer, etc., but when the computer is working, the USB can be directly plugged into use. However, some people think that the stability of the USB interface needs to be improved compared with the parallel port that has been tested for a long time.
In order to meet the needs of different printing environments, the interface type of the ticket printer has been developed very richly. Different printers have parallel port, serial port, network port and USB port for users to choose, but we can easily ignore these small interfaces for office. The impact of efficiency and cost. Now let's take a look at the differences between these interfaces.
The parallel port is also called the parallel interface. At present, the computer is basically equipped with a parallel port, and the parallel interface is mainly used as a printer port, and a 25-pin D-shaped connector is used. The so-called "parallel" means that 8-bit data is transmitted simultaneously through parallel lines, so that the data transfer speed is greatly improved, but the length of the line for parallel transmission is limited, because the length is increased, the interference is increased, and the data is prone to error and no Suitable for printing environments such as kitchens and printing devices and computers.
The serial port is called the serial interface. Today's PCs generally have two serial ports COM 1 and COM 2. The serial port differs from the parallel port in that its data and control information are transmitted one by one. Although this speed will be slower, the transmission distance is longer than the parallel port, so the serial port should be used for long distance communication. Usually COM1 uses a 9-pin D-shaped connector, also known as the RS-232 interface, while COM2 uses an old-fashioned DB25-pin connector, also known as the RS-422 interface. This interface is already very Use less.
Compared with the bulky awkwardness of the parallel interface, the square USB interface that is common on printers is now much smaller and more compact. The USB interface has a wide range of features and can be hot swappable. That is, when the user uses the external device, it does not need to turn off the camera and then turn on the computer, etc., but when the computer is working, the USB can be directly plugged into use. However, some people think that the stability of the USB interface needs to be improved compared with the parallel port that has been tested for a long time.
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