When it's an airbus!When it Turns in to a street!
On the bus because the bus isn't a fixed place
The drivers have remote key to open the bus door even if they dont have any key at all.
On the bus means that you are on top of the bus. In the bus means that you are inside the bus.
mca bus = Micro Channel Architecture was a IBM Standard, proprietary in this case, for 16 to 32 bit buses on their PS/2 Computers. Never widely adopted. isa bus = Industry Standard Architecture bus...