Advanced Database Management System - Tutorials and Notes: Primary Storage Devices

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Friday, 8 July 2016

Primary Storage Devices

List of primary storage devices, Different type of primary storage devices



Primary Storage

  • Directly accessible to the CPU
  • Computer cannot run without Primary memory
  • Fastest memory
  • Costly memory
Primary Storage Devices
Storage Capacity
Volatile / Non-volatile
How data written?
Types
Random Access Memory (RAM)
32GBs (as on 2016)
Both
Electric
SRAM, DRAM, SDRAM, DDR SDRAM, VRAM
Cache Memory
Few MBs
Volatile
Electric

ROM (Firmware)
Few KBs
Non-volatile
Integrated Circuits
PROM, EPROM, EEPROM


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