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3.1 Storage devices and media
3.1 Storage devices and media
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ICT IGCSE Theory – Revision Presentation3.1 Storage devices and media
• Identify storage devices, their associated media and their uses, e.g.
• Magnetic backing storage media: fixed hard disks and drives, portable and
Chapter 3: Storage devices and media
removable hard disks, portable and removable hard drives, magnetic tape drives
and magnetic tapes, memory cards
• Optical backing storage media (CD/DVD/Blu-ray): CD ROM/DVD ROM, CD
R/DVD R, CD RW/DVD RW, DVD RAM, Blu-ray discs
• Solid state backing storage: solid state drives, flash drives (pen drive/memory
stick/USB stick)
• Describe the advantages and disadvantages of the above devices
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3.1 Storage devices and media
What is Storage
Chapter 3: Storage devices and media
• Secondary Storage devices ensures data is stored permanently so that it can
be used again at a later date.
• Storage medium is the name given to the device that actually holds the data.
• Sometimes the storage medium is fixed i.e.
magnetic coated disks build into hard drive.
• Sometimes the storage medium is removable
from the device i.e. CD ROM that can be taken
out of the drive.
Think about what we store:
Documents, Images, Video,
Music, Software, Games etc.
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3.1 Storage devices and media
File Sizes
Chapter 3: Storage devices and media
Storage devices or files sizes are measured in:
Kilobytes (KB), Megabytes (MB), Gigabytes (GB) and Terabytes (TB)
1 KB 1000 Bytes
* 1000
1 MB 1000 KB
* 1000
1 GB 1000 MB
* 1000
1 TB 1000 GB
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