Monday 12 September 2016

Chapter 5 : Types of Utility Programs and Operating Systems
  • Define system software and identify the two types of system software
  • Summarize the features of several stand-alone operating systems
  • Describe the functions of an operating system
  • Briefly describe various server operating systems
  • Explain the purpose of several utility programs
  • Summarize the startup process on a personal computer
  • Summarize the features of several embedded operating systems
What is a System Software?
  • System software consists of the programs that control or maintain the operations of the computer and its devices
What is an operating system?
  • An operating system (OS) is a set of programs containing instructions that work together to coordinate all the activities among computer hardware resources
  • Example [ Start and shut down a computer, Provide a user interface, Manage programs, Manage memory, Coordinate tasks, Configure devices, Establish an Internet connection, Monitor performance, Provide utilities, Automatically update, Control a network, Administer security ]
The function of operating system:-
  • The process of starting or restarting a computer is called booting including Cold boot and Warm boot 
  • Cold boot is when we turning on a computer that has been powered off completely
  • Warm boot is when we using the operating system to restart a computer
  • You can boot from a boot disk
  • A recovery disk contains a few system files that will start the computer
  • An operating system includes various shut down options
  • A user interface controls how you enter data and instructions and how information is displayed on the screen
  • With a graphical user interface (GUI), you interact with menus and visual images
  • With a command-line interface, a user uses the keyboard to enter data and instructions

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