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  2. Motherboard form factor - Wikipedia

    en.wikipedia.org/wiki/Motherboard_form_factor

    Requires a carrier board. Typically used for COM-HPC Client Type modules with multiple SODIMM memory sockets. COM-HPC Size D PICMG: 2020 160 × 160 mm (6.3 × 6.3 in) Used in embedded systems. Requires a carrier board. Typically used for COM-HPC Server Type modules with 4x full size DIMM memory sockets. COM-HPC Size E PICMG: 2020 200 × 160 mm

  3. Memory Reference Code - Wikipedia

    en.wikipedia.org/wiki/Memory_Reference_Code

    The MRC is part of reference BIOS code, which relates to memory initialization in the BIOS. It includes information about memory settings, frequency, timing, driving and detailed operations of the memory controller. The MRC is written in a C-language code, which can be edited and compiled by board makers. It provides a space to develop advanced ...

  4. Power-on self-test - Wikipedia

    en.wikipedia.org/wiki/Power-on_self-test

    BIOS POST card for ISA bus BIOS POST card for PCI bus Professional BIOS POST card for PCI bus Two POST seven-segment displays integrated on a computer motherboard. The original IBM BIOS made POST diagnostic information available by outputting a number to I/O port 0x80 (a screen display was not possible with some failure modes). Both progress ...

  5. Motherboard - Wikipedia

    en.wikipedia.org/wiki/Motherboard

    Power connectors, which receive electrical power from the computer power supply and distribute it to the CPU, chipset, main memory, and expansion cards. As of 2007 [update] , some graphics cards (e.g. GeForce 8 and Radeon R600 ) require more power than the motherboard can provide, and thus dedicated connectors have been introduced to attach ...

  6. BIOS - Wikipedia

    en.wikipedia.org/wiki/BIOS

    In later computer systems, the BIOS contents are stored on flash memory so it can be rewritten without removing the chip from the motherboard. This allows easy, end-user updates to the BIOS firmware so new features can be added or bugs can be fixed, but it also creates a possibility for the computer to become infected with BIOS rootkits .

  7. ATX - Wikipedia

    en.wikipedia.org/wiki/ATX

    An ATX power supply provides a number of peripheral power connectors and (in modern systems) two connectors for the motherboard: an 8-pin (or 4+4-pin) auxiliary connector providing additional power to the CPU and a main 24-pin power supply connector, an extension of the original 20-pin version. 20-pin Molex 39-29-9202 at the motherboard. 20-pin ...

  8. Computer case - Wikipedia

    en.wikipedia.org/wiki/Computer_case

    Inside a gaming case during gameplay. 360° photograph. A full tower case. Accessories shown include: a fan controller, a DVD burner, and a USB memory card reader.. Cases can come in many different sizes and shapes, which are usually determined by the form factor of the motherboard since it is physically the largest hardware component in most computers. Consequently, personal computer form ...

  9. AT (form factor) - Wikipedia

    en.wikipedia.org/wiki/AT_(form_factor)

    Baby AT motherboard An ATX Form Card, used by later Baby-AT motherboards to allow for USB, PS/2 mouse, and IR connectivity through headers. In 1987, the Baby AT form factor was introduced, based on the motherboard found in the IBM PC/XT 286 (5162) [2] and soon after all computer makers abandoned AT for the cheaper and smaller Baby AT form factor, using it for computers that spanned several ...