ICT Lesson, 01 Mar notes

1. Portable storage devices

USB (Universial Serial Bus) Flash Drives
- occupies physical space
  - Can possibly be lost
  - Can possibly be damaged
- Speed / Time needed varies by USB port.
  - USB 2 is slower than USB 3
Cloud Storage
- Some examples include:
  - Google Drive (by Google)
  - OneDrive / Skydrive (by Microsoft)
  - Dropbox
- Requires (stable) internet connection
- Good security
  - Hackers can still steal data if they want tho...
- (usually) larger storage
- Cheaper than others in general
SD Cards
- For smaller devices, e.g. Cameras and Mobile Phones.
  - Cameras use SD Cards
  - Phones use MicroSD Cards (very very small)
- Storage capacity and price is similar to USB flash drive
DVD / Blu-Ray DVD
- physically larger (looks like a disk)
- small capacity (DVD 4 GB / Blu-ray DVD 20GB)
- Cheap
- Used to store movies (usually)