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types of information storage - Coggle Diagram
types of information storage
magnetic storage
most common form of secondary storage
read/ write head uses magnetic field of platter to read/ edit data
can be externally connected by usb
Floppy disk
magnetic tape
hard disk drives
large capacity + cheaper per gigabyte than solid state
not durable, not very portable because of high number of moving parts
quick access speed but slower than solid state
optical storage
uses a laser to project beams of light onto a disk, allowing it to read data from a CD, DVD, or Blu-Ray
Slowest form of secondary storage
disc drives are usually internal, but external drives can be purchased for laptops.
CD
CD-ROM
DVD
Blu-Ray
Lowest capacity
not durable, disks can scratch easily
very portable due to size of disks
solid state storage
slowly replacing HDD
quieter, faster, use less power