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Thread: Bios

  1. #1
    student0 is offline Senior Member+
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    Default Bios

    BIOS originall kiya he.
    kya ye cruppt hoti he.
    ise repair ker saktey hain.
    ya copy kar saktey hain.

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    (bī´ōs) Acronym for basic input/output system, the built-in software that determines what a computer can do without accessing programs from a disk. On PCs, the BIOS contains all the code required to control the keyboard, display screen, disk drives, serial communications, and a number of miscellaneous functions.

    The BIOS is typically placed in a ROM chip that comes with the computer (it is often called a ROM BIOS). This ensures that the BIOS will always be available and will not be damaged by disk failures. It also makes it possible for a computer to boot itself. Because RAM is faster than ROM, though, many computer manufacturers design systems so that the BIOS is copied from ROM to RAM each time the computer is booted. This is known as shadowing.

    Many modern PCs have a flash BIOS, which means that the BIOS has been recorded on a flash memory chip, which can be updated if necessary.

    The PC BIOS is fairly standardized, so all PCs are similar at this level (although there are different BIOS versions). Additional DOS functions are usually added through software modules. This means you can upgrade to a newer version of DOS without changing the BIOS.

    PC BIOSes that can handle Plug-and-Play (PnP) devices are known as PnP BIOSes, or PnP-aware BIOSes. These BIOSes are always implemented with flash memory rather than ROM.


    BIOS System Boot Operations

    One of the most important functions that the BIOS plays is to boot up the system. When the PC is first turned on, its main system memory is empty, and it needs to find instructions immediately to tell it what to run to start up the PC. These it finds within the BIOS program, because the BIOS is in read-only permanent memory and so is always available for use, even when the rest of system memory is empty.

    This section takes a look at what is involved in booting the PC, including a discussion of the steps in the system boot process, and a look at the power-on self-test (POST) that is conducted whenever the system starts up.

    ایک طرف لمبی لمبی امیدیں
    دوسری طرف کل نفس ذائقۃ الموت

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    labjab is offline Advance Member
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    nice information

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    student0 is offline Senior Member+
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    darwiash bhai ap ne jo info english me de he wo agar urdu yaroman urdu me de to mere liye aur east ho jaye ga.

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    *Xpert~Baba* is offline SHD38SK
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    CLICK HERE FOR ROAMN URDU

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    Dil_Shah is offline Senior Member
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    Aaap ki problem slove ho gaii

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