Memory and Storage

Memory and Storage

1. Primary Storage

   • RAM
     • volitile
     • Expensive to manufacture compared to hardrive
     • less storage than a hardrive
     • used to store programs currently being used
   • ROM
     • non-Volitile
     • Read-Only memory
     • Contains the programs that allow your computer to boot up
     • Stores the bios
     • Cannot be edited
     • only a small device compared to RAM
   • Cache
     • Very Expensive to manufacture compare to the likes of RAM and HDD
     • Small compared to a memory stick or SSD
     • Only conatins a tiny amount of storage compared to a HDD
     • built into the Processor
     • Can be read from incredibly quickley compaired to other types of primary memory

2. Secondary Storage

   • HDD
     • Usualy has a higher storage capacity than flash memory
     • cheapest per Gb
     • More Compatible compared to flash memory
   • SSD
     • More Expensive to manfacture than a HDD per Gb
     • More Power Efficient than HDD
     • Faster read speed than HDD but slower than RAM
     • Smaller than a HDD
   • Optical
     • More Portable than things such as HDD or RAM
     • Very cheap to manufacture compared to SSD, HDD and RAM
     • Requires a special reader to be able to use so it may not be as compatible as a memory stick
     • Dose not have much storage compared to a HDD or SSD