Memory and Secondary Storage (AQA GCSE Computer Science): Flashcards
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15 cards from this deck
RAM characteristics
RAM characteristics
Volatile, read/write, stores active programs temporarily
RAM volatility meaning
RAM volatility meaning
Loses all data when power is turned off
ROM primary function
ROM primary function
Stores essential startup instructions
ROM volatility characteristic
ROM volatility characteristic
Non-volatile: retains contents when power is off
Why secondary storage is essential
Why secondary storage is essential
Provides permanent, non-volatile storage for data, programs, and OS
How magnetic storage works
How magnetic storage works
Uses magnetism to store data
Main HDD advantage
Main HDD advantage
Large capacity at relatively low cost
Main HDD disadvantage
Main HDD disadvantage
Slower speeds due to mechanical components
How SSD differs from HDD
How SSD differs from HDD
Uses electronic circuits, no moving parts
Main SSD advantage
Main SSD advantage
Much faster access speeds
How optical storage works
How optical storage works
Uses light-based technology
CD storage capacity
CD storage capacity
Around 700MB
DVD single-layer capacity
DVD single-layer capacity
4.7GB
Blu-Ray single-layer capacity
Blu-Ray single-layer capacity
25GB
Cloud storage definition
Cloud storage definition
Data on remote servers accessed via internet