What types of interfaces does the industrial control motherboard have?

USB interface is a popular interface at present. It can support 127 peripherals and can be independently powered. It is widely used. The USB interface can obtain 500mA current from the motherboard and supports hot plugging. At present, USB interfaces are also divided into USB2.0, USB3.0, USB3.1, etc., mainly in terms of transmission bandwidth and power consumption.

The serial port COM interface of industrial personal computer is called serial port

At present, most mainboards provide two COM interfaces, COM1 and COM2, for connecting serial mouse and external Modem and other devices. The 03F8h-03FFh address of COM1 interface is 03F8h-03FFh, and the interrupt number is IRQ4; For COM2 interface, the interrupt number is UZ-8n-02FFh and the interrupt number is IRQ3. It can be seen that the response of COM2 interface takes precedence over COM1 interface, and products based on this interface are difficult to find in the market.

VGA (Video Graphics Array) interface, also known as D-Sub interface

Although LCD can receive digital signals directly, many low-end products use VGA interface to match VGA interface graphics card. The VGA interface is a D-type interface with 15 empty pins, divided into three rows and five in each row. VGA interface is a widely used interface type on graphics cards. Most graphics cards have this interface.

DVI digital input interface is the abbreviation of Digital Visual Interface, which is a 24-pin connector.

DVI-A port is used to transmit analog signals. Its function is the same as VGA. It is not a real digital interface. DVI-D port is used to transmit digital signals. It is a real digital signal interface.

The DVI-I port is used to transmit compatible analog or digital signals through different defined active pins on the interface. DVI-I ports are also divided into single channel and dual channel.

In the application of industrial motherboards, the number of general interfaces is often more than that of Icano panels. There are often many extensible interfaces, which we can expand when needed.