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2.7 System Software - Coggle Diagram
2.7 System Software
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Starting and shutting down computers : (a) Booting
- Cold boot ( Starting a computer with powered off completely)
- Warm boot ( Starting a computer with powered on )
3 Ways of Shutting down computers & mobile devices
- log off
- sleep mode
- hibernate
- Manage Memory
Function : to optimizes the use of RAM
HOW ?
- OS allocates data & instructions to a memory while they are being processed
- It monitors the content of memory.
- OS releases the items from being monitored in memory when the processor no longer requires them
- Establish an Internet connection
Function : to provide a means to establish an Internet connections.
- Control a network
Function: to organize and coordinate how multiple users access and share resources on a network
Example :
Printer, Inter access, files and programs
- Monitor performance
Functions : to assess and reports information about various computer resources and devices
Example :
Users can monitor the processor ,drivers ,network an memory usage
- Providing File, Disk and System management tools
(a) Operating systems often provide users with the capability of
- Managing files
- Searching for files
- Viewing images
- Securing a computer
- Uninstalling programs
- Cleaning up disks
- Defragmenting disks
- Diagnosing problems
-Backing up files and disks
- Setting up screen savers
- Spyware Remover
- Spyware remover is a utility program that detects and deletes spyware
Function : to detects and deletes spyware
- Adware Remover
- A utility program that detects and deletes adware
Function : to detects and deletes adware
- Disk Defragmenter
- A utility program that reorganizes files and unused space on a hard disk so that OS access data more quickly and program runs faster
- Back-up and Restore Utility
Function of back-up utility : Allows users to copy selected files or the entire hard disk to another storage medium. Function of restore utility : Restore data from a backup to the original storage location or to a replacement device.
Definition of software :
Software is a series of instruction that tells a computer what tasks to perform and how to perform them
Definiton of system software :
Programs that control or maintain the operations of the computer and its devices
Function Of system software :
Serves as the interface between the user, the application software, and the computer's hardware
Definition of operating system (OS)
A set of programs that coordinate all activities among computer or mobile device hardware
- Desktop Operating System
- A complete operating system that works on a desktops laptops and some tablets
Example : (a) Proprietary Desktop OS - Windows , macOS(b) Open Source Desktop OS - Chrome OS , Linux
- Server Operating systems
- A multiuser operating system that organizes and coordinates how multiple users access and share resources on a network.
Example : (a) Proprietary Desktop OS - Windows Server , macOS Server(b) Open Source Server OS - Ubuntu , Linux
- Mobile Operating Systems
- An operating system that resides on mobile devices such as smartphones.
Example : (a) Proprietary Mobile OS - IOS, Windows(b) Open Source Mobile OS - Android, Tizen
Provide a user interface(a) Command-line user interface
- Short keywords to enter data & instruction
(b) Graphical User Interface (GUI)
- User interact with menus and icons to give commands