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Storage devices

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Storage devices Bits, Bytes, Kilobytes, MB, GB, Terabytes Hardware Moore s law Disks Internal hard disk 500 GB 2 TB (50-150 ) External hard disk 500 GB 2 ... – PowerPoint PPT presentation

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Title: Storage devices


1
Storage devices
  • Bits, Bytes, Kilobytes, MB, GB, Terabytes
  • Hardware
  • Moores law
  • Disks
  • Internal hard disk 500 GB 2 TB (50-100 )
  • External hard disk 500 GB 2 TB (50-100 )
  • Solid State Drive SSD 60 GB 500 GB (50-300 )

2
Storage devices
  • Discs
  • CD 700 MB and DVD 4 GB ( 1 )
  • Single use R or rewritable RW
  • Need a writer to be written
  • Blu-ray 25 GB ( 5 )

3
Storage devices
  • Memory
  • USB pen drive or memory stick
  • 4-64 GB (5-80 )
  • Used mostly to move data
  • Memory cards
  • Camera, phones, players

4
Software
  • Software types
  • Operating system
  • Takes care of devices
  • User-computer interface
  • Windows OS X Linux
  • Android iOS Windows Phone
  • Program files (Word, Excel, Skype, )
  • Data files

5
Software licenses
  • Cost
  • Freeware (Skype Linux)
  • Shareware (mobile phone apps)
  • Commercial (Windows Photoshop)
  • Subscription (Office 365)
  • Private
  • Permission to modify
  • Free or Open Source (Linux)
  • Proprietary (Acrobat Reader WinZip Office)

6
Software naming
  • Name
  • Linux, Microsoft Office, Microsoft Windows
  • Distribution/edition
  • Linux Ubuntu
  • Microsoft Office Professional
  • Microsoft Windows Enterprise
  • Version (usually numeric but may be a name)
  • Linux Ubuntu 13.10
  • Microsoft Office Professional 2013
  • Microsoft Windows 7 Enterprise

7
Data format
  • Open
  • GIF, PDF, HTML
  • Closed proprietary
  • DOC
  • Open proprietary
  • DOCX
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