An archival system uses high-density optical media, such as Blu-ray discs, to store digital records.
Explain how binary data is physically represented on the reflective surface of an optical disc, and describe how the drive's optical pickup system reads this data back.
Hardware and software Questions
Practise AQA GCSE Computer Science Hardware and software with exam-style questions for GCSE Computer Science. 51 questions, matched to the AQA GCSE Computer Science (8525) specification and written in Paper 1 and Paper 2 style. Every question includes a full worked solution and mark scheme, so you can see where marks are awarded rather than just whether you got the answer right.