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Solid state media

1. 1. Fixed Hard disk drive

2. 1. Fixed Hard disk drive

   • -Internal Storage device
   • -Direct access and very large storage
   • -Disc surface is coated in a magnetic film
   • -Used to store operating system, software applicantion
   • Storage space are 250 gigabytes up to 4 terabytes
   • Advantages : Fast read / write time, huge capacity
   • Disadvantages : Can be damaged easily, not portable

3. 2. Portable Hard disk drive

   • -They can connected to the computer externally.
   • -They use direct data access methods.
   • -Transportable
   • -Used to storage large files
   • portable back-up system
   • Advantages : small and light, fast read and write
   • Disadvantages : Expensive

4. 3. Magnetic tape

   • -Oldest forms of computer data storage
   • -Thin strip pf magnetic coated plastic
   • -Very slow data access rate
   • - Useless for real time application
   • Advantage : Less expensive, Large storage capacity
   • Disadvantages : Very slow

5. 1. Memory sticks

   • Small
   • Data transfer very fast
   • External storage device
   • Very small and light weight
   • Large storage capacity
   • More expensive

6. 2. Solid state hard drives(SSD)

   • Used in desktop PC's and laptops
   • Last longer than magnetic hard disk
   • Store data such as operating system, software application and school work
   • Faster data access
   • Expensive

7. 3. Flash memory cards

   • SD cards have maximum capacity of 2. 56 GB
   • Micro cards have maximum capacity of 128GB
   • Easy to connect to mobile phone
   • SD cards are used to store photos
   • Micro cards can be used by MP3 players to store musics.
   • Lower storage capacity