A dedicated high-speed digital bus designed to facilitate systems integration by low-level, high-speed, real-time communication between National Instruments boards. Using RTSI, motion boards can share high-speed digital signals with data acquisition, image acquisition, or digital I/O boards with no external cabling and without consuming bandwidth on the host bus. The RTSI bus also has built-in switching, so you can route signals to and from the bus on-the-fly through software.