Introduction of Common Types of Bar Code Scanning Gun Interface

Release Time:2015-06-17

Although the way each scanner scans the barcode is different, the decoder will identify and distinguish the barcode, and then upload it to the main computer through the scanner interface connection. There are many types of barcode scanner interfaces, and the common types of barcode scanner interfaces are introduced.

SCSI (Small Computer Standard Interface)

The maximum number of connected devices of this interface is 8, and the maximum transmission speed is usually 40 M/S, which is faster and generally connects high-speed devices. The installation of SCSI equipment is more complex, in the PC machine to add SCSI card, easy to produce hardware conflict, but powerful.

EPP (Enhanced Parallel Interface)

An enhanced bi-directional parallel transmission interface with a maximum transmission speed of 1.5Mbps. The advantage is that there is no need to use other cards in the PC, there is no limit to the number of connections (as long as you have enough ports), and the installation and use of the device is easy. The disadvantage is that it is slower than SCSI. This interface because of the installation and use of simple and convenient and in the low-end performance requirements are not high occasions to replace the SCSI interface.

USB (Universal Serial Bus Interface)

Up to 127 peripherals can be connected. The current USB1.1 standard has a maximum transmission speed of 12Mbps and an auxiliary channel for low-speed data transmission. In the future, if there is a USB2.0 standard barcode scanner speed may be extended to 480 M/s. With hot plug function, plug and play. The barcode scanner of this interface is gradually popularized with the establishment and promotion of the USB standard under the push of Intel.

PS2 (keyboard interface)

It is similar to the usage of USB. It needs an intelligent head to be converted. Generally, the scanning gun purchased will come with it. there are still a lot of companies with PS2 interface.

The above is the introduction of common types of barcode scanner interface. I hope you can better apply it in your life, and at the same time, I hope you can better use barcode scanner!

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