Operating Systems
- Created by: Cadenza146
- Created on: 15-06-21 14:53
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- Factors affecting choice of operating system
- User Interface (UI)
- GUI
- Graphical User Interface
- icons, menus, pointers etc
- e.g Windows
- Command Line
- Depreciated, an example was MS-Dos
- users type in code to carry out processes
- users must have good knowledge of the system
- Menu-Based
- users scroll through menus to find information they're looking for
- not used very often, was often used on MP3 players
- Adapted
- being able to change elements e.g resize icons
- GUI
- Number of Users and Tasks
- single user multitask
- a single user can use multiple pieces of software at the same time
- e.g listening to music and using the internet to research
- a single user can use multiple pieces of software at the same time
- Navigation systems use real-time operating systems
- single user single task
- old, e.g couldn't listen to music while playing snake
- multiple user system
- large network systems, large number of users can access a range of services at the same time
- single user multitask
- Amount of Data
- some large projects use distributed computing to use the computer capacity of millions of computers from around the world
- seti@home
- some large projects use distributed computing to use the computer capacity of millions of computers from around the world
- Open Source
- uses code from a number of programmers
- users are free to make any changes which may be taken into official release
- because it's free there's less resources for bug testing and fixing
- Linux
- uses code from a number of programmers
- Proprietary
- have to buy the license to use but given updates for free
- Windows
- user will not receive a copy of the source code and doesn't actually own it
- User Interface (UI)
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