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Storage Devices - Computer Fundamentals
3817    Arnab De    04/08/2019

Storage Devices

Storage devices are divided into two types 1) Primary Memory 2) Secondary Memory

  1. Primary memory (main memory): These types of memories are volatile memory. i.e. if the computer turn of the all the data & information written on RAM will be erased automatically.
    • RAM (Random Access Memory/Read-Write Memory) : It is a volatile memory after switch off the computer, every thing erase written in it.
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      1. Static RAM (SRAM) : Data store in it never change until we change it or power off the computer.
      2. Dynamic RAM (DRAM) : Data store in it change or refresh after a specific time.
    • ROM (Read-only-memory)
      1. PROM : PROGRAMABLE ROM
      2. EPROM : ERASABHLE PROGRAMABLE ROM
      3. EEPROM : ELECTRICALLY ERASABHLE PROGRAMABLE ROM
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  3. Secondary memory (storage devices) : : These types of memories are non-volatile memory. i.e. if the computer turn of the all the data & information written on RAM will remain unchanged.
    1. Megnetic Disk
      • Hard Disk (Local Disk)
      • Floppy Disks
      • Memory Cards
      • Zip Drive
      • Pen Drive
      • External Hard Disk
    2. Optical Disk
      • CD-R
      • CD-RW
      • DVD-R
      • DVD-RW
      • Blue Ray Disc
      • CD-RW
What is the definition of Booting? What is Computer Software?
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Author Details
Arnab De
I have over 16 years of experience working as an IT professional, ranging from teaching at my own institute to being a computer faculty at different leading institute across Kolkata. I also work as a web developer and designer, having worked for renowned companies and brand. Through tutorialathome, I wish to share my years of knowledge with the readers.
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27/10/2022: Computer fundamentals
By: Abhishek Upadhyay [abhishekupadhyayagra@gmail.com]
Rabindranath Tagore
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