Infs

• Parts of information systems

  • People
  • Hardware
  • Procedure
  • Software
  • Data
• Hardware


  The most important part of a computer
• Hardware


  • Making end users more productive
• End-users


  People who use the computer
• Procedure


  Rules for people to follow when using software, hardware and data
• Software


  Equipment that processes data and converts information
• Types of computers


  • Supercomputers
  • Midrange servers
  • PCs (Personal computers)
• Data


  Raw, unprocessed facts including texts and numbers
• Information


  Processed data
• Types of files


  • Document
  • Presentation
  • Database
• Programs


  A series of step instructions that tell the computer how to do work
• Purpose of programs


  To convert data into information
• Types of software


  • System software
  • Application software
• System software


  • Enables application software to run on hardware
• Application software


  • Used by end-users
• Types of application software

  • General-purpose applications
  • Computer-specific applications
• Operating systems


  Coordinate computer resources and run applications
• Types of operating systems

  • Embedded OS
  • RTOS
  • Network OS
• Utilities


  Perform specific tasks related to managing computer resources
• Antivirus program


  • Protects from viruses and ensures security and privacy of personal data
• Internet


  A network of computers used for sharing information
• Cloud computing


  Allows devices to communicate and access shared resources over the internet
• File History


  • Utility program included with Windows 8
  • Makes a copy of all files in the libraries, contacts,
  • favorites and the desktop
  • Helps prevent the effect of disk failure
• Disk Cleanup


  • Identifies and eliminates nonessential files
  • Frees up valuable space and improves system performance
• Disk Defragmenter


  • Files are organized in tracks and sectors
  • Tracks-concentric ring
  • Sectors-wedge-shaped sections of a track
• Utility program included with Windows 8
• Helps prevent the effect of disk failure
• Data


  • raw, unprocessed facts including
  • texts
• System Software


  • Works with end users, application software, and computer hardware
  • Handles the technical details
• System Software includes


  • Operating system
  • Utilities
  • Device drivers
  • Language translators
• Operating Systems


  A collection of programs that handle technical tasks
• Functions of Operating Systems

  • Manages computer resources
  • Coordinate memory, processing, storage, printers and monitors
  • Monitor system performance
  • Schedule tasks
  • Provide security
  • Start-up the computer
  • Provides user interface
  • Runs applications
  • Multitasking
• Features of an Operating System

  • Booting-starting or restarting the computer
  • Icons
  • Pointer
  • Windows
  • Menus
  • Tabs
  • Dialog boxes
  • Help
  • Gesture Control
• Files


  Share data and programs
• Folders


  Store related files
• Categories of Operating Systems

  • Embedded operating systems - RTOS (real-time operating systems)
  • Stand-alone operating systems
  • Network operating systems (linked computers)
• Mobile Operating Systems


  Embedded operating system, less complicated and more specialized for wireless
• Some of the best known Mobile OSes

  • Android
  • Windows Phone
• Desktop Operating Systems


  • Windows-most widely used
  • Mac OS-powerful and easy to use
  • UNIX-network, originally designed for Web
  • LINUX-non proprietary; free from the Web
• Windows 8


  Integrates the desktop OS with its mobile OS