Flashcards in Lesson 4 - System software Deck (10)
What does BIOS stand for?
-Basic input and output -software/system
What is interrupting software?
-A safe way to exit what you are doing.
What is managing memory?
-Called fair share in memory
-It allocates cetains sections ofmemory tor different processes.
-This is decided by the operating system.
What is paging?
-The memory is split up into eaul sized chunks and each section is called a page.
- Each program is allocated a certain number of pages
- Has grid like structure
-Pages can be easily swapped between virtual memory and main memory
What is segmentation?
-It is faster than paging
-You can copy whole segments into cache.
What is the "heap" in segmentation?
-It is a general purpose part of memory.
What is "stack" in segmentation?
-A place wher eyou store the functions in the page
What is virtual memory?
-If an application is not being used it is copied into the page file.
What is diskthrashing?
-When pages are constantly beging changed from memory into ram.