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1 Types and components of computer systems (1 questions)
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Primary storage is the main memory used by the computer for actively running programs and data. It is characterized by:
- Speed: Very fast, allowing quick access to data.
- Cost: Relatively expensive per unit of storage.
- Volatility: Usually volatile, meaning data is lost when the power is turned off (e.g., RAM).
- Example: RAM (Random Access Memory), ROM (Read-Only Memory), Cache memory.
Backing storage is used for long-term storage of data and programs. It is characterized by:
- Speed: Slower than primary storage.
- Cost: Less expensive per unit of storage than primary storage.
- Volatility: Non-volatile, meaning data is retained even when the power is off.
- Example: Hard Disk Drives (HDDs), Solid State Drives (SSDs), USB flash drives, Optical Discs (CDs, DVDs, Blu-rays), Cloud Storage.