Operating Systems

Question	Answer
What is an Operating System?	> (Set of) programs that manages the operations of the computer for the user > Bridge between the user and the computer's hardware (since a user cannot directly communicate with hardware)
What Functions does an Operating System Perform?	> Bridge between the user (through a CLI or GUI) > Memory management > Interrupt service routines > Processor scheduling > Backing store management > Management of I/O > System security (e.g., administrator and root access)
Where is the OS Stored?	> When computer is off: permanent storage, e.g., HDD, SSD > When computer is on: RAM
What happens to the OS when the Computer is Switched On?	> Small program, called a loader, is held in ROM > The loader sends instructions to load the OS by copying it from the permanent storage into RAM

Resource summary

	Created by Malachy Moran-Tun over 1 year ago