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External hardware devices common mistakes
Study External hardware devices with curriculum-aligned Common Mistakes resources, practice links, and exam-focused support.
At a glance
common mistakes
Resource type
Topic
External hardware devices
AqaA LevelComputer ScienceFundamentals of computer organisation and
Common mistakes
Confusing RFID with barcode scanning
Claiming that an RFID reader must optically scan a visible printed barcode.
Fix itState that a barcode reader uses optical scanning of printed markings, whereas RFID uses radio communication between a reader and a tag.
Confusing pages and blocks
Stating that an individual SSD page can be erased independently before it is written.
Fix itA page must be erased before it can be written to, but the technology requires the whole block, containing many pages, to be erased.
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