Motherboards by CSKz75

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       Motherboards

  The Main Printed Circuit Board
 Inside The PC That Contains and
Controls The Components That Are
 Responsible For Processing Data.




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         Motherboard is

•   Multi-layered printed circuit board
•   Copper circuit paths called traces carry
    signals and voltages across the
    motherboard
•   Some layers carry data for input/output
    while other layers carry voltage and
    ground returns

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Motherboard Determines:

• CPU type and speed     • Number of memory
• Chipset                  sockets and
• Secondary cache type     maximum memory
• Types of Expansion     • Type of case
  slots                  • ROM
• Number of Expansion    • Plug & Play
  slots                    compatibility
• Type of memory         • Type of keyboard

                                              4
LPT 1 Printer                  Motherboard Components
Port          PS/2 Mouse&
              Ps/2 Keyboard            AGP Expansion
              Connector                Slot




USB Port
                                                                      Power
                                                                      Connector


  PCI
  Expansion
                                                                       CPU
  Slots
                                                                       Socket




    BIOS                                                               Memory
    Chip                                                               Sockets




                                                        ChipSet
                        Floppy Drive                              CMOS 5
                        Controller                                Battery
         AGP Expansion Slot

(Accelerated Graphics Port) A high-speed port developed by Intel
that is designed for the display adapter (video card) only. It provides
a direct connection between the card and memory, and only one
AGP slot is on the motherboard.
AGP uses a 32-bit bus and is generally brown in color.




                                                                    6
CMOS Battery

        A battery that maintains
          the time, date, hard
          disk and other
          configuration settings
          in the CMOS memory.




                             7
                 BIOS Chip

 BIOS Basic Input /Output system- The BIOS, or Basic
  Input/Output System, provides low-level access to the
  computer's hardware. The BIOS resides on a chip on the
  motherboard




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PCI Expansion Slots
           • Peripheral Component
             Interconnect) A peripheral bus
             commonly used in PCs,
             Macintoshes and workstations
           • PCI provides "plug and play"
             capability, automatically
             configuring the PCI cards at
             startup
           • PCI runs at 33MHz, supports
             32- and 64-bit data paths and
             bus mastering
           • PCI expansion slots are also
             identified by their white color.

                                                9
  Primary and Secondary IDE
          Controller

 (Integrated Drive Electronics) A type of hardware interface
  widely used to connect hard disks, CD-ROMs and tape drives to
  a PC.
 Today, two Enhanced IDE (EIDE) sockets are built onto the
  motherboard, and each socket connects to two devices via a 40-
  pin ribbon cable.




                                                              10
     Floppy Disk Drive                      Back

         Controller

A 34 pin adapter on the Motherboard that
 attaches to the controller.




                                             11
    DIMM Memory Modules
(Dual In-Line Memory Module) A printed circuit
 board that holds memory chips and plugs into a
 DIMM socket on the motherboard
 DIMMs (dual in-line memory modules) doubles the
  number of paths between the module and motherboard by
  using each side of the edge connector independently.
CPU Socket

      A device designed to
       attach the Central
       Processing Unit (CPU)
       to the Motherboard’s
       internal circuitry
ATX Power Connector

          A 20 pin connector
           used to supply power
           the motherboard
           components.
PS/2 Mouse and Keyboard        Back

       Connector

            A 6-pin Mini-DIN plug
             and socket used to
             connect a keyboard
             and mouse to a
             computer.




                                 15
       LPT 1 Printer Port

In a PC, the logical name assigned to parallel
 port #1. The parallel port is typically used for
 the printer. A second parallel port, if installed,
 is assigned to LPT2.
   Com1 and Com2 Ports

 In a PC, the logical name assigned to the first
  serial port. Two serial ports, or COM ports, are
  provided on a PC to connect a mouse and
  modem. Typically the mouse is on COM1, and
  the modem on COM2.
ChipSet
     A set of chips that
      provides the interfaces
      between all of the PC's
      subsystems. It provides
      the buses and electronics
      to allow the CPU,
      memory and input/output
      devices to interact.




                             18
Universal Serial Bus (USB)
               Universal Serial Bus) A hardware
                interface for low-speed
                peripherals such as the keyboard,
                mouse, joystick, scanner, printer
                and telephony devices.
               USB's hot swap capability allows
                everything to be plugged in and
                unplugged without turning the
                system off.
Motherboard with SATA
Baby AT Motherboard

          A smaller
           motherboard (9x10")
           that superseded the
           one used in the
           original IBM AT
           (12x13.5"). The Baby
           AT motherboard has
           been widely used in
           386, 486 and Pentium
           PCs.
ATX Motherboard

              A motherboard that
               superseded the widely-
               used Baby AT design.
               ATX rotates the CPU and
               memory 90 degrees,
               allowing full-length
               boards in all sockets. The
               power supply blows air
               over the CPU rather than
               pulling air through the
               chassis.
NLX Motherboard

        An Intel motherboard
         used for NetPCs and
         other low-profile
         (space-saving)
         systems. Introduced
         in 1997, NLX supports
         the AGP and uses a
         riser card for
         expansion boards.
The references
Paul Miller. "Apple sneaks new logic board
  into whining MacBook Pros" (2006).
  Engadget.
“Mobo” Webopedia. Retrieved 2008-10-23.
 c't Magazine, vol. 21, pp. 216-221. 2003.

								
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