Raspberry Pi's advantage is the ability to use inexpensive microSD cards to switch between different images easily ... to switch between different operating systems at will.

The computer's master control program. When a computer is turned on, a small "boot program" loads the operating system. Although additional system modules may be loaded as needed, the main part ...

The application programs "talk" to the operating system. If application programs are moved to a different computing environment, they have to be converted to interface with a different operating ...