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  2. User space and kernel space - Wikipedia

    en.wikipedia.org/wiki/User_space_and_kernel_space

    Some operating systems are single address space operating systems—they have a single address space for all user-mode code. (The kernel-mode code may be in the same address space, or it may be in a second address space). Other operating systems have a per-process address space, with a separate address space for each user-mode process.

  3. Virtual address space - Wikipedia

    en.wikipedia.org/wiki/Virtual_address_space

    In computing, a virtual address space (VAS) or address space is the set of ranges of virtual addresses that an operating system makes available to a process. [1] The range of virtual addresses usually starts at a low address and can extend to the highest address allowed by the computer's instruction set architecture and supported by the operating system's pointer size implementation, which can ...

  4. Operating system - Wikipedia

    en.wikipedia.org/wiki/Operating_system

    The operating system provides an interface between an application program and the computer hardware, so that an application program can interact with the hardware only by obeying rules and procedures programmed into the operating system. The operating system is also a set of services which simplify development and execution of application programs.

  5. Single address space operating system - Wikipedia

    en.wikipedia.org/wiki/Single_address_space...

    In computer science, a single address space operating system (or SASOS) is an operating system that provides only one globally shared address space for all processes.In a single address space operating system, numerically identical (virtual memory) logical addresses in different processes all refer to exactly the same byte of data.

  6. Base and bounds - Wikipedia

    en.wikipedia.org/wiki/Base_and_bounds

    The operating system loads the physical address of this segment into a base register and its size into a bound register. Virtual addresses seen by the program are added to the contents of the base register to generate the physical address. The address is checked against the contents of the bounds register to prevent a process from accessing ...

  7. How to Find Out if You Have the Most Updated Operating System

    www.aol.com/.../blog/most-updated-operating-system

    In the System window, you will find information about your computer, including the operating system version. The information displayed will include the Windows edition, system type (32-bit or 64 ...

  8. Address space - Wikipedia

    en.wikipedia.org/wiki/Address_space

    Often an address space in a system with virtual memory corresponds to a highest level translation table, e.g., a segment table in IBM System/370. Address spaces are created by combining enough uniquely identified qualifiers to make an address unambiguous within the address space. For a person's physical address, the address space would be a ...

  9. Minimum system requirements for AOL Mail

    help.aol.com/articles/what-are-the-minimum...

    Using a supported operating system and web browser is key to having the best experience with AOL products and services. While Internet Explorer may still work with AOL Mail, it's no longer supported by Microsoft and can't be updated. For a more reliable and secure experience with AOL products, we recommend you download a supported web browser.