Operating Systems
- Created by: dragonfruitjam
- Created on: 28-02-16 11:01
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- Operating Systems
- Features
- Provides an interface between...
- User and Computer
- Computer and Software
- Manages Hardware resources
- Provides ...
- security for data on multi user systems
- Utility software
- Provides an interface between...
- File Allocation Table
- Stores files...
- name
- size
- access rights
- Stores files...
- Interrupts
- a signal from device/ software to request processing time
- types
- I/O
- Timer
- hardware error
- program
- Memory Managment
- segmentation
- variable size
- logically grouped
- Harder to retrieve
- methods of memory partitioning
- paging
- same size
- modules contained in multiple pages
- large, slow access
- disk threshing problem
- paging
- max ram use
- paging
- same size
- modules contained in multiple pages
- large, slow access
- disk threshing problem
- paging
- despite insufficient memory
- Why
- Os/provides security
- allocates for...
- different procceses at same time
- paging and segmenting
- Protects
- allow memory to be shared
- data and procceses from each other
- Untitled
- segmentation
- Scheduling
- Why
- To make sure
- CPU is working hard and
- ..efficiently as possible
- resources are used
- ..efficiently as possible
- users on network think they are only ones on system
- CPU is working hard and
- CPUs carry instructions 1 at a time
- To make sure
- methods
- first
- length
- prioties
- round robins
- Why
- Features
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