computer
Computer memory types
Volatile
RAM
Historical
  • Williams–Kilburn tube (1946)
  • Delay line memory (1947)
  • Mellon optical memory (1951)
  • Selectron tube (1952)
  • Dekatron
  • Z-RAM (2002)
  • T-RAM (2009)
Non-volatile
ROM
  • Mask ROM
  • PROM
  • EPROM
  • EEPROM
  • Flash memory
NVRAM
  • ReRAM
Early stage NVRAM
  • FeRAM
  • MRAM
  • PCM (3D XPoint)
  • FeFET memory
Magnetic
Optical
  • Optical disc
  • 5D optical data storage
In development
  • CBRAM
  • Racetrack memory
  • NRAM
  • Millipede memory
  • FJG RAM
Historical
  • Paper data storage (1725)
  • Drum memory (1932)
  • Magnetic-core memory (1949)
  • Floppy disk (1950)
  • Plated wire memory (1957)
  • Core rope memory (1960s)
  • Thin-film memory (1962)
  • Disk pack (1962)
  • Twistor memory (~1968)
  • Bubble memory (~1970)
Related
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