Common Interface Types Of Scanning Gun

1. SCSI (small computer standard interface): The maximum number of devices connected to this interface is 8. Generally, the maximum transmission speed is 40m / s, which is fast. Generally, high-speed devices are connected. The installation of SCSI devices is complicated. Generally, a SCSI card is added to the PC, which is easy to cause hardware conflict, but has powerful functions.

2. EPP (enhanced parallel interface): An enhanced bidirectional 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 on the number of connections (as long as you have enough ports), and the equipment is easy to install and use. The disadvantage is that it is slower than SCSI. This interface is easy to install and use, so it replaces the SCSI interface in the medium and low-end occasions with low performance requirements.

3. USB (universal serial bus interface): Up to 127 peripherals can be connected. The maximum transmission speed of USB1.1 standard is 12mbps (1.5MB / s), and there is an auxiliary channel for transmitting low-speed data (1.5mbps (192kb / s)). The scanning gun speed of USB2.0 standard is 480mbps (60MB / s). The speed of USB 3.0 reaches 5Gbps (640MB / s). With hot plug function, plug and play. The scanning gun with this interface is gradually popularized with the establishment and promotion of the USB standard under the promotion of Intel.