We think you have liked this presentation. If you wish to download it, please recommend it to your friends in any social system. Share buttons are a little bit lower. Thank you!
Presentation is loading. Please wait.
Published byBernardo Eastman
Modified over 6 years ago
Able to explain the 6 key functions of system software Able to explain each using a suitable example Identify three different system software interfaces
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
6 AQA ICT AS Level © Nelson Thornes 2008 booting up the system when the computer is first switched on
7 AQA 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.
8 AQA 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.
9 AQA 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.
10 AQA 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.
11 AQA ICT AS Level © Nelson Thornes 2008 system security, user/file permissions, handling errors,
The operating system also provides the user different interfaces, such as: Graphical User Interface 1 2 3
Buffers & Spoolers J L Martin Think about it… All I/O is relatively slow. For most of us, input by typing is painfully slow. From the CPUs point.
including File Management
Lesson 4 0x Operating Systems.
Lesson 6. The Computer Operation Computer Operating Systems GUI vs. Command line The Microsoft Windows Family File Systems – How Computers Manage Data.
Computer Hardware 4 Main Types.
Higher Computing Computer Systems S. McCrossan Higher Grade Computing Studies 7. Systems Software 1 System Software This software is used to provide the.
The Operating System. What is an Operating System? The program that is loaded first and manages the hardware resources like main memory, backing storage.
Operating Systems An operating system is a set of programs that controls how the hardware of a computer works. An operating system provides a means of.
The Operating System. What is an Operating System? The software which makes it possible for you to use your computer The software which starts up when.
Xuan Guo Chapter 1 What is UNIX? Graham Glass and King Ables, UNIX for Programmers and Users, Third Edition, Pearson Prentice Hall, 2003 Original Notes.
The Operating System and the User Interface
Computer Main Parts.
Systems Software Operating Systems.
An Introduction to Operating Systems. Definition An Operating System, or OS, is low-level software that enables a user and higher-level application.
The Operating System The operation system (OS) is a set of programs that coordinates: Hardware functions Interaction between application software and computer.
Operating Systems What do you have left on your computer after you strip away all of the games and application programs you bought and installed? Name.
© Paradigm Publishing Inc. 4-1 Chapter 4 System Software.
Slide 1 System Software Software The term that we use for all the programs and data that we use with a computer system. Two types of software: Program.
© 2021 SlidePlayer.com Inc. All rights reserved.