UNIT 2-B

Devices used to store data actively being used by the CPU.

• Secondary Storage Devices

• Cache Memory

• Primary Storage Devices

• DRAM

Devices that store data permanently but are not directly accessed by the CPU.

• RAM

• Cloud Storage

• Secondary Storage Devices

• Cache Memory

Devices used for data archiving and backups, accessed infrequently.

• Tertiary Storage Devices

• RAM

• DRAM

• ROM

Storage devices that use magnetic fields to store data.

• Optical Storage Devices

• Flash Memory Devices

• Magnetic Storage Devices

• Blu-ray Disc

Storage devices that use flash memory for quick access and durability.

• Zip Disk

• Flash Memory Devices

• Optical Discs

• Magnetic Tape

Devices that use lasers to read and write data on optical discs.

• Magnetic Cards

• Cloud Storage

• Optical Storage Devices

• SSDs

Data stored remotely on internet-based servers.

• Cache Memory

• Tertiary Devices

• Cloud and Virtual Storage

• MROM

A type of RAM that needs constant refreshing to maintain data.

• SRAM

• DRAM (Dynamic Random-Access Memory)

• ROM

• PROM

A type of RAM that does not need refreshing and is faster than DRAM.

• DRAM

• Cache

• SRAM (Static Random-Access Memory)

• EEPROM

A small, high-speed memory storing frequently accessed data.

• Flash Memory

• Cache Memory

• Cloud Storage

• Zip Disk