On the bus because the bus isn't a fixed place
When it's an airbus!When it Turns in to a street!
The drivers have remote key to open the bus door even if they dont have any key at all.
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...
The things you have mentioned are interfaces. There are only three buses and these are Address, Data and the control bus