Chapter 5 Flashcards
Operating system
software that provides an
environment in which applications can run and provides
an interface between hardware and human operators.
GUI
graphical user interface.
CLI
command line interface.
Icon
small picture or symbol used to represent, for
example, an application on a screen.
WIMP
windows, icons, menu and pointing device.
Memory management
– part of the operating system
that controls the main memory.
Memory optimization
function of memory
management that determines how memory is allocated
and deallocated.
Memory organization
function of memory
management that determines how much memory is
allocated to an application.
Security management
– part of the operating system
that ensures the integrity, confidentiality and availability
of data.
Memory protection
function of memory management
that ensures two competing applications cannot use
same memory locations at the same time.
Process management
part of the operating system
that involves allocation of resources and permits the
sharing and exchange of data.
Hardware management
part of the operating system
that controls all input/output devices connected to
a computer (made up of sub-management systems
such as printer management, secondary storage
management, and so on).
Device driver
software that communicates with the
operating system and translates data into a format
understood by the device.
Utility program
parts of the operating system which
carry out certain functions, such as virus checking,
defragmentation or hard disk formatting.
Disk formatter
utility that prepares a disk to allow
data/files to be stored and retrieved.
