storage-keeps data ,information , program , and application(reading and writing)
cloud storage-online storage media usedcis transparent to the user
capacity-number of bytes a storage medium can hold
Hard disk
- circular platters
- to store data , instruction , and information
- tracks
- platters
- sectors
- form factor
- read/write head
- revolution per minutes
flash memory storage
- higher storage capacity
- faster access time
- faster transfer rates
- quieter operation
- more durable
- lighter weight
- less power consumption
- less heat generation
- longer life
cloud storage
- an internet services that provide storage to computer or mobile device users
optical disc
- dvd-rom
- dvd-r
- dvd+r
- dvd-rw
- dvd+rw
- dvd-ram
enterprise storage
- network attached storage(nas)
- storage area network(san)
other types of storage :
- magnetic stripe card
- smart card
- RFID tag
- microfilm
- microfiche
CHAPTER 9 : OPERATING SYSTEM
- start and shut down a computer or mobile devices
- provide a user interfaces
- manage program
- manage memory
- coordinate tasks
- configure devices
- establish an internet connection
- monitor performance
- provide file management and other devices or media-related tasks
- updating operating system software
- control a network
- administer security
operating system also provide user with a variety of tool :
- file manager
- search
- image viewer
- uninstaller
- disk cleanup
- disk defregmenter
- screen saver
- file compression
- pc maintenance
- backup and restore
desktop operating system :
- windows
- mac OS
- UNIX
- Linux
mobile operating system :
- android
- iOS
- windows phone
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