Software that allows the operating system to communicate with hardware devices.
What are the two types of user interface?
Graphical and command line
Command - line interface is text based, but it is far more efficient and powerful
A graphical user interface (GUI) uses windows, menus, buttons, icons etc. To allow users to interact with software applications
How does multitasking work?
The operating system splits the processor'stime up so that different instructions are being processed in the most efficient order, this may be by making different instructions take turns being processed or by executing the quickest instruction first. This happens so quickly, so it looks like these things are happening at the same time.
What does file management include?
Naming, saving, editing, movement and deletion of data
What is defragmentation and why is it needed?
Overtime, on the hard disk, a lot of small gaps start to appear in the data where files are being deleted, edited, moved etc. This slows down read/write times as the head has to move back and forth across the disk. Defragmentation puts fragmented files back together to reduces the read/write times
What is encryption?
Encryption is the process of converting information into a code or cipher to prevent unauthorized access.
