Discussion
Which of the following can store information in the form of microscopic pits on metal disks.
Answer: A
Correct answer: Laser disks
On an optical disk the data is recorded as microscopic pits pressed into a reflective layer; a laser beam scans the track and detects the change in reflection at each pit edge. Tape and punched cards store data magnetically and mechanically, and a RAM cartridge holds it electronically.
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