AQA A2 Computing 4.1 Role of an Operating System Flashcards
1
Q
System program
A
a program that manages the operation of a computer
2
Q
Operating systems
A
the most fundamental of all system programs
3
Q
Virtual machine
A
the apparent machine that the operating system presents to the user, achieved by hiding the complexities of the hardware behind layers of operating system software
4
Q
Application programming interface
A
a layer of software that allows application programs to call on the services of the operating system
