Operating System
- Created by: LeonMiller
- Created on: 19-09-17 08:31
View mindmap
- What i have learn today
- What does an OS do?
- Transfers data between memory locations and the cpu
- Produces something you can see on your moniter
- Controls input and output devieces
- Lets applications and programs run
- GUI (Graphical user interface)
- Pointer: The symbol that tells you where your mouse is. You can move objects and select commands
- Icons: Small legos that represent programs
- Desktop: Where all the icons are and where the user can interact with the computer
- Menus: Lets you run commands by selecting choices from a menu
- Windows:
- CLI
- Requires commands to be typed on the keyboards
- Commands are shortened using short sequences of words and abbreviations
- Less user friendly because the user needs to learn the commands
- Multiple-users and multi-tasking
- Multi-Tasking
- Computers have improved overtime and can now do more than one process at a time
- Users often run programs simultaneously e.g.have Skype open waiting for a call, have spottily on listening to some music and a word documents over the top of them two. This is known as multitasking
- Multi-User
- Most operating systems nowadays allow multiple users to be able to use them
- A multi-user operating system allows several people to use the same computer, without have to reboot the computer
- Multi-Tasking
- Security
- Must make sure one user can't access another files
- It does this by dividing memory into sections and keeps log of which user process are using each page to prevent conflicts
- Some files are stored centrally so everyone who has a account on that operating system can access them
- Main operating systems available
- Computer
- Windows
- Apple iOS
- Tablet
- Google android
- Mac 0s10
- Computer
- What does an OS do?
Comments
No comments have yet been made