Basic specifications for the transfer of digital data between commercial avionics systems are defined in the ARINC 429 standard and Specification.
Signal levels, timing, and protocol features are provided for ease of design implementation and data transmission.
In the 21st century, modern airplane designs continue to use the ARINC 429 bus for data transmission.
When the required data capacity is not a necessity, ARINC 429 buses are nonetheless used because of their relative integrity, simplicity, and ease of certification.
The interchangeability and interface of Line Replaceable Units (LRUs) for commercial aircraft are provided by ARINC 429.
In layman’s terms, the ARINC protocol is intended to support communication in the avionics’ Local Area Network (LAN).
The Mark 33 Digital Information Transfer System (DITS) bus is another name for ARINC 429.
These buses are employed primarily in the field of avionics, but they are also used in the manufacture of ground vehicles, weaponry, and other industrial and military hardware.