STORAGE

STORAGE

1. Holds data, instructions and information

2. Storage Medium is physical material used for storage

3. Capacity

   • Number of bytes a storage medium can hold

4. Storage Device

   • Hardware that records and retrieves items to and from storage media

5. Access Time

   • Time it takes storage device to locate item on storage medium

6. TYPES OF STORAGE

   • FLOPPY DISK
     • Portable, inexpensive storage medium
     • Floppy Disk Drive
       • Device that reads from and writes to floppy disk
   • ZIP DISK
     • Magnetic medium that stores 100 MB to 750 MB of data
     • Require Zip Drive
   • HARD DISK
     • High capacity storage
     • Consists of several inflexible, circular platters that store items lectronically
   • CDs AND DVDs
     • Flat, round, portable metal disc made of metal, plastic and lacquer
     • Can be read only or read/write
     • CD ROM
       • Compact Disc Read Only Memory
     • Picture CD
       • Stores digital version of roll of film
     • DVD-ROM
       • Must have DVD ROM drive to read DVD-ROM
   • TAPE
     • Primarily used for backup
   • PC CARD
     • Adds capabilities to computer
     • Commonly used in notebook computers
   • MINIATURE MOBILE STORAGE MEDIA
     • Storage for small mobile devices
     • Card Reader
       • Reads information stored on miniature mobile storage media
       • Type of card determines type of card reader needed
     • Smart Card
       • Stores data on microprocessor embedded in small card
     • E-Money
       • Paying for goods and services over the internet
   • MICROFILM & MICROFICHE
     • Store microscopic images of documents on roll or sheet of film

Bilder und Dateien der Mindmap