Operating Systems
- Created by: Georgia
- Created on: 17-11-17 12:31
View mindmap
- The Operating System
- Core Roles
- Communication with the hardware
- creating a user interface
- User Interface
- Allows a user to interact with the computer
- GUIs
- Most common
- Designed to be easy for everyday users
- Visual, interactive and intuitive
- aka. Graphical User Interfaces
- Optimized for specific input methods
- In the past, they have been WIMP-based (windows, icons, menus and pointers), but now some have been designed for touchscreen
- Command-line interface
- Text-based
- The user enters specific commands to complete tasks
- Less-resource heavy than GUIs
- Unsuitable for everyday users.
- Can be very useful to advances users
- Far more efficient and powerful and can be used to automate processes using scripts.
- Can be very useful to advances users
- User Interface
- Providing a platform for different applications to run
- Allow multitasking
- More than one program runs at one time
- NOT SIMULTANEOUS
- The OS doles out time to different applications so it appears they're happening at the same time
- NOT SIMULTANEOUS
- The OS doles out time to different applications so it appears they're happening at the same time
- More than one program runs at one time
- Manages peripherals
- Utility software
- Also organised hard disk with utility software
- Many Pesky Operating Systems Collect In My Umbrella
- Organises file and disk management
- File and Disk Managment
- File extensions are used to tell the computer which software to use to open the file
- Examples of File Extensions
- .jpg
- .mp3
- .mpeg
- Examples of File Extensions
- The organisation of data into a usable hierarchical structure
- Also deals with the movement, editing and deletion of data
- OS decides which sector to write data to
- Also organised hard disk with utility software
- OS keeps track of free spaces
- File extensions are used to tell the computer which software to use to open the file
- File and Disk Managment
- Devices Drivers
- Used to communicate with internal hardware or peripherals connected to the computer
- Ever piece of hardware requires one.
- Acts as a translator for signal between OS and hardware
- Updates may be installed manually or automatically
- When a computer boots up the OS will choose the dorrect DD for the hardware
- User Interface
- Allows a user to interact with the computer
- GUIs
- Most common
- Designed to be easy for everyday users
- Visual, interactive and intuitive
- aka. Graphical User Interfaces
- Optimized for specific input methods
- In the past, they have been WIMP-based (windows, icons, menus and pointers), but now some have been designed for touchscreen
- Command-line interface
- Text-based
- The user enters specific commands to complete tasks
- Less-resource heavy than GUIs
- Unsuitable for everyday users.
- Can be very useful to advances users
- Far more efficient and powerful and can be used to automate processes using scripts.
- Can be very useful to advances users
- File and Disk Managment
- File extensions are used to tell the computer which software to use to open the file
- Examples of File Extensions
- .jpg
- .mp3
- .mpeg
- Examples of File Extensions
- The organisation of data into a usable hierarchical structure
- Also deals with the movement, editing and deletion of data
- OS decides which sector to write data to
- OS keeps track of free spaces
- File extensions are used to tell the computer which software to use to open the file
- User Accounts
- Single User
- i.e Windows
- One-user to use the computer at once
- Multiuser
- i.e UNIX server
- Multiple users on the computer at once
- Simultaneous access
- Often on mainframes
- Allow different users to be granted access to specific data
- Can be password or pin protected to prevent data theft
- Some have fingerprint or retina scanners
- Single User
- Core Roles
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