Subject
Computer Science
Topic
Computer Fundamental
Why can Blu-ray store more data than DVD on a similarly sized disc?
Why can Blu-ray store more data than DVD on a similarly sized disc?
a)
It has CPU cacheb)
It uses a shorter-wavelength blue-violet laser and smaller data featuresc)
It spins with magnetic headsd)
It uses DRAM cellsExplanation
The shorter-wavelength laser allows smaller pits/marks and tighter track spacing, increasing optical data density.Related questions
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