The Emerson/MOTOROLA MVME5500 series VMEbus single-board computers are designed to meet the needs of original equipment manufacturers, including the defense and aerospace, industrial automation, and medical imaging segments. Customers seeking to use technology updates while maintaining backward compatibility with existing VMEbus infrastructure will be able to upgrade to the MVME5500 series and take advantage of enhanced functional features. The MVME5500 features a 1 GHz MPC7457 processor, ideal for data-intensive use. The MVME5500 offers more than just better processor capabilities; It also provides balancing functions from the processor, memory, and local grass subsystemMVME5500 digital control module is used to connect external mechanical contacts and electronic digital sensors, such as photoelectric switches and proximity switches, the main function of the digital input module is to convert the external digital signal level of the field to the internal signal level of the PLC(programmable logic controller). The input current is usually a few milliamps, and such modules play an important role in industrial automation, especially when collecting digital signals. The working principle of the MVME5500 digital control module depends on the device and signal type to which it is connected. For example, if it is connected to a switching signal, then when the contacts are clustered, it will be regarded as 1; When the contact is broken, it is treated as a 0, and these digital signals are then converted into internal signals that the PLC can recognize. Digital control module has a wide range of use scenarios, mainly used in the need to collect or manipulate digital signals.