| Subject | English | Finnish |
| transp., avia. | basic flight control and display system | automaattiohjauksen ja näytön perusjärjestelmät |
| tech. | basic hole system | reikäkantajärjestelmä |
| comp., MS | basic input/output system | BIOS (The set of essential software routines that test computer hardware at startup, start the operating system, and support the transfer of information between hardware devices. The BIOS is stored in read-only memory (ROM) so that it can be run when the computer is turned on. Although critical to performance, the BIOS is usually invisible to computer users) |
| IT | basic linear algebra system | lineaarialgebran perusjärjestelmäBLAS |
| IT | basic operating system | peruskäyttöjärjestelmä |
| tech. | basic shaft system | akselikantajärjestelmä |
| commun. | basic system model | perusjärjestelmämalli |
| commun., IT | basic system module | järjestelmän perusyksiköt |
| el. | basic uni-directional system | yksisuuntainen perusjärjestelmä |
| commun., IT | network basic input/output system | NetBIOS |
| comp., MS | network basic input/output system | NetBIOS (An application programming interface (API) that can be used by programs on a local area network (LAN). NetBIOS provides programs with a uniform set of commands for requesting the lower-level services required to manage names, conduct sessions, and send datagrams between nodes on a network) |