? Able to explain the 6 key functions of system software Able to explain each using a suitable...
-
Upload
bernardo-eastman -
Category
Documents
-
view
220 -
download
0
Transcript of ? Able to explain the 6 key functions of system software Able to explain each using a suitable...
![Page 1: ? Able to explain the 6 key functions of system software Able to explain each using a suitable example Identify three different system software.](https://reader035.fdocuments.us/reader035/viewer/2022062417/551b30d155034607418b635c/html5/thumbnails/1.jpg)
Section 4:Operating system
softwareBy Alex Melhuish
![Page 2: ? Able to explain the 6 key functions of system software Able to explain each using a suitable example Identify three different system software.](https://reader035.fdocuments.us/reader035/viewer/2022062417/551b30d155034607418b635c/html5/thumbnails/2.jpg)
Typ
ical IT
Syst
em
![Page 3: ? Able to explain the 6 key functions of system software Able to explain each using a suitable example Identify three different system software.](https://reader035.fdocuments.us/reader035/viewer/2022062417/551b30d155034607418b635c/html5/thumbnails/3.jpg)
?Operating system software
![Page 4: ? Able to explain the 6 key functions of system software Able to explain each using a suitable example Identify three different system software.](https://reader035.fdocuments.us/reader035/viewer/2022062417/551b30d155034607418b635c/html5/thumbnails/4.jpg)
Learning objectives
Able to explain the 6 key functions of system software
Able to explain each using a suitable example
Identify three different system software interfaces
![Page 5: ? Able to explain the 6 key functions of system software Able to explain each using a suitable example Identify three different system software.](https://reader035.fdocuments.us/reader035/viewer/2022062417/551b30d155034607418b635c/html5/thumbnails/5.jpg)
• B the system when the computer is first switched on
• I communication with each other• O of files on the hard disk• M during multi-tasking• A between tasks• S , user and file permissions, handling
errors
Functions of an operating system(Systems Software)
![Page 6: ? Able to explain the 6 key functions of system software Able to explain each using a suitable example Identify three different system software.](https://reader035.fdocuments.us/reader035/viewer/2022062417/551b30d155034607418b635c/html5/thumbnails/6.jpg)
6AQA ICT AS Level © Nelson Thornes 2008
booting up the system when the computer is first switched on
![Page 7: ? Able to explain the 6 key functions of system software Able to explain each using a suitable example Identify three different system software.](https://reader035.fdocuments.us/reader035/viewer/2022062417/551b30d155034607418b635c/html5/thumbnails/7.jpg)
7AQA ICT AS Level © Nelson Thornes 2008
managing memory during multi-tasking
• The operating system allocates processing time and memory to the various tasks that need to be carried out.
![Page 8: ? Able to explain the 6 key functions of system software Able to explain each using a suitable example Identify three different system software.](https://reader035.fdocuments.us/reader035/viewer/2022062417/551b30d155034607418b635c/html5/thumbnails/8.jpg)
8AQA ICT AS Level © Nelson Thornes 2008
allocating processor time between tasks
• While computers seem to be able to multitask, a single processor can only do one thing at a time.
• Dual and quad core processors behave as if the computer has more than one processor.
![Page 9: ? Able to explain the 6 key functions of system software Able to explain each using a suitable example Identify three different system software.](https://reader035.fdocuments.us/reader035/viewer/2022062417/551b30d155034607418b635c/html5/thumbnails/9.jpg)
9AQA ICT AS Level © Nelson Thornes 2008
controlling where data is stored on disk
• The operating system organises the storage and retrieval of data files from backing storage such as the hard drive.
• It keeps a directory of where the files are stored on disk.
• It keeps track of the free space on the drive so that files can be stored efficiently for faster retrieval.
![Page 10: ? Able to explain the 6 key functions of system software Able to explain each using a suitable example Identify three different system software.](https://reader035.fdocuments.us/reader035/viewer/2022062417/551b30d155034607418b635c/html5/thumbnails/10.jpg)
10AQA ICT AS Level © Nelson Thornes 2008
communicating with input and output devices
The operating system needs to:• interface with peripherals
such as a mouse or printer• handle interrupts – signals
that need an immediate response, such as a mouse click to stop a file printing.
![Page 11: ? Able to explain the 6 key functions of system software Able to explain each using a suitable example Identify three different system software.](https://reader035.fdocuments.us/reader035/viewer/2022062417/551b30d155034607418b635c/html5/thumbnails/11.jpg)
11AQA ICT AS Level © Nelson Thornes 2008
system security, user/file permissions, handling errors,
![Page 12: ? Able to explain the 6 key functions of system software Able to explain each using a suitable example Identify three different system software.](https://reader035.fdocuments.us/reader035/viewer/2022062417/551b30d155034607418b635c/html5/thumbnails/12.jpg)
Types of interface
The operating system also provides the user different interfaces, such as:
Graphical User Interface
1
2
3