Secondary storage CS
Give advantages and disadvantages of optical disks
Advantages - Cheap, portable
Disadvantages - Easily can be scratched, has a small capacity, can easily be stolen
Give advantages and disadvantages of SSD's in comparison to HDD's
Advantages - Access speeds are faster, doesn't require defragmentation, less power consumption, portable, silent.
Disadvantages - Costs a lot more, Has lower storage than HDDs
Give advantages and disadvantages of HDD's in comparison to SSD's
Advantages - Costs less than SSD's, Usually has a bigger capacity, Has a longer life span,
Disadvantages - Loud, More prone to damage if accidently hit, slower access speeds
What are the different computing legislations
- Data protection Act 1998
- The computer misuse act 1990
- The copywright and patent act 1998
- the regulation of investigatory powers act 2000
How do optical disks work
A laser is shone at the disc and processes the reflection. The disc burns, forming pits and lands which store 1s and 0'.
How do magnetic tapes work
Particles are magnetised on a disk/tape