System software Flashcards
Application software
A software that has been developed to solve a specific problem for users
System software
Runs at the most basic level of your computer. helps the computer manage
operating system
is the principal component of a computers system software
The OS manages
- Booting • CPU management • File management • Task management • Security management
Operating system
low-level, master system of
programs that manage the basic operations of the computer.
Booting involves four steps
- Turn the computer on.
- Diagnostic routines test main memory, CPU, and other hardware.
- Basic Input/Output System (BIOS) programs are copied to main memory.
• BIOS contains instructions for operating the hardware.
• The computer needs those instructions to operate the hardware and find a
copy of the OS. - Boot program obtains the OS and loads it into computer’s main memory.
Cold boot
turn on computers on system
warm boot
restart a computer thats already on
boot disk
use a CD or flash drive to boot OS
Memory Management
OS keeps track of memory locations to prevent programs and data from
overlapping each other
CPU Management: Queues
First-in, first-out (FIFO) sequence of data or programs that waits
in line for its turn to be processed
CPU Management: buffers
The place where the data or programs sit while they are waiting
A file is either a
a data file
or a system file
Task management: a task
an operation such as storing, printing or calculating
Multitasking
handling more than one program at one time