BCIU Bus Control Interface Unit

general purpose bus interface unit

ARINC BUS interface

TUBO Tape Unit Bus Out

TUBI Tape Unit Bus In

tachogeneratordata extended bus interface

SPI bus interface

small computer interface bus

Serial peripheral interface bus

PIA bus interface

peripheral interface bus

PCI bus interface device

PCI bus interface

Parallel Interface Bus

MXImultisystem extension interface bus

Mux Bus Interface

multisystem extention interface bus

multiplex bus interface