operating systems

operating systems

1. user interface

   • graphical user interface; here is a very visual and interactive, uses pictures, logos, text.
   • command-line interface; very text based and command using, uses script for advanced users.
   • menu interface; gives the user options to choose, used in ccashpoints
   • natural language interface; not that reliable and the technology is still taking place, but it allows you to speak your language into the system and it'll understand what you are saying.

2. multi-tasking

   • is when you have more than one program operating at the same time, they can both run at the same time because they have different time slots and it can run at the same time because it switches between the time slots.

3. device drive

4. roaming profiles

5. multi-tasking

   • is when you have more than one more program operating at the same time, they can both run at the same time because they have a different time slice and it switches between the time slices whilst you're using them. the two programs don't actually run at the same time, you just don't notice it switching.

6. the device drive

   • Drive is needed to change the operating system instructions to what the hard drive will understand and follower, many device drivers are already built into the operating systems.

7. roaming profiles

   • it allow people to have different settings, such as display. You could have a fixed profile, meaning you cannot change the desktop background so all users have it set the same.

8. data

   • Data is stored in files; an extension to the file tells the computer which application to load the file into. However over time this will become fragmented.

9. utilities

   • Encryption utilities use algorithm to change plain text into more text.
   • Defragmentation utilities re-organise files onto a hard disk to put fragments of files back together.
   • Compression utilities compress files together giving more disk space. When you back up , there are two different types of back up : •Full back up where all files are copied which is known to back up everything, Incremental Back-Up which only backs up files that have changed since the last Full Back.