Protected Mode

Protected mode is a type of memory utilization available on Intel 80286 and later model microprocessors. In protected mode, these processors provide the following features:

  • protection: Each programcan be allocated a certain section of memory. Other programs cannot use this memory, so each program is protected from interference from other programs.
  • extended memory : Enables a single program to accessmore than 640K of memory.
  • virtual memory : Expands the address spaceto over 1GB.
  • multitasking : Enables the microprocessor to switch from one program to another so the computer can execute several programs at once.
  • Although the DOS operating system is not designed to take advantage of these features, some DOS programs can run in protected mode using special drivers. More sophisticated operating system, such as OS/2, Windows, or UNIX, have built-in support for protected mode.

    Vangie Beal
    Vangie Beal
    Vangie Beal is a freelance business and technology writer covering Internet technologies and online business since the late '90s.

    Top Articles

    Huge List Of Texting and Online Chat Abbreviations

    From A3 to ZZZ we list 1,559 text message and online chat abbreviations to help you translate and understand today's texting lingo. Includes Top...

    How To Create A Desktop Shortcut To A Website

    This Webopedia guide will show you how to create a desktop shortcut to a website using Firefox, Chrome or Internet Explorer (IE). Creating a desktop...

    The History Of Windows Operating Systems

    Microsoft Windows is a family of operating systems. We look at the history of Microsoft's Windows operating systems (Windows OS) from 1985 to present...

    Hotmail [Outlook] Email Accounts

      By Vangie Beal Hotmail is one of the first public webmail services that can be accessed from any web browser. Prior to Hotmail and its...

    Abacus Definition & Meaning

    An abacus, also known as a counting frame, is a mechanical device used...

    Legacy Code Definition &...

    Legacy code refers to source code that has been inherited from a previous...

    Unregulated Power Supply Definition...

    An unregulated power supply is a system that transforms input voltage into direct...