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ICT Lesson Notes, 24 November 2021

1. Quick recap

  • What is interaction?
    • Interaction = Human and machine interact
    • Even an non-function button is also considered interactive
    • As long as something happens after user action, it will be considered as interaction.
    • Video that starts to play once website loads is only a multimedia element.
    • Pretty dumb but memorize it :)
  • Refer to textbook for more dumb info
  • For presentation we have:
    • Slide
    • Multimedia (Pretty much everything else except text, e.g. Audio Video Animation etc etc etc)
    • Transition & Animation effects
      • Transition = Different slides
      • Animation = Within the same slide
  • Separation of information
    • Separate into title, text, and annotations. Add images if necessary.

2. OLE

  • OLE = Object linking / Object Embeddings
  • What is an object?
    • Everything can be an object.
    • e.g. text, image, excel spreadsheets.
  • How to do OLE?
    • Powerpoint ribbon -> Insert -> Object -> Follow on-screen instructions
    • Tick checkbox Link if you want to do Object link. If you want to do object embed, don't select the checkbox.
  • Object links VS Object Embeddings
    • Object link - Shortcut (preview) of the file to the powerpoint slide.
      • Changes will be synced real-time.
      • A symbolic link will be created for the file in the slide.
      • Powerpoint will crash if the linked file is deleted. It will only save the last known version of the file.
      • Object Linking is basically creating a symlink (ln -s)of an file to a powerpoint.
    • Object Embedding - Embed (include) file to the slide / Powerpoint presentation.
      • Changes will not be synced real-time.
      • The whole file now exists in the slide.
      • User will be warned that a potential security concern exists if the embedded file on drive has been edited.
  • Usages in real life
    • Object embedding -The file needs to be widely shared.
      • Use object embedding if you want to play safe.
      • All files will be included in the powerpoint, no matter how the file changes on the hard drive.
    • Object linking
      • When you're running low on disk space
      • When you want to show real-time changes on files.

3. Conclusion

  • Object linking
    • File size increase less
    • Location of included files needs to be fixed
    • File changes affect each other
  • Object embedding
    • File size increase more
    • Location of included files does not matter
    • Files are independent