The Baby AT Motherboard
The Baby AT Motherboard set a standard for all future motherboard designs.
Baby AT Motherboard with an Intel 486DX CPU under the heatsink and fan. A series of EISA slots line the right hand side.
  • Old and obsolete computer hardware.

  • Did set the standard for future AT based motherboards.

  • Designed for 8088, 80286, 80386, and 80486 based computers.

 

The motherboard pictured here can support the following technologies:

  1. Any Intel 486 based central processing unit designed on the left hand side of the motherboard.

  2. (6) 8 bit ISA slots designed on the right hand side of the motherboard.

  3. (2) 16 bit EISA slots designed at the bottom of the motherboard.

  4. (8) Single Inline Memory Modules (SIMM's).

  5. (1) AT Keyboard.

  6. Other components need to plug into the ISA or EISA expansion slots on the motherboard.

  7. This motherboard has no built in support for hard disk or optical storage drives. A seperate hard drive controller card was required to control a hard disk sub system.

This hardware is considered obsolete and is explained here for reference purposes only.

The AT Motherboard

The AT Motherboard pictured here is the predeccessor to the Baby AT motherboard. Like the design structure of the the Baby AT motherboard the had AT motherboard had only one keyboard port soldered into the design structure. The Baby AT design also introduced the newer, faster, and more robust PCI bus type for connecting expansion cards.

Baby AT Motherboard with an Intel 486DX CPU under the heatsink and fan. A series of EISA slots line the right hand side.
  • Old and obsolete computer hardware.

  • Designed for Pentium I and II based computers.

 

The motherboard pictured here can support the following technologies:

  1. Any Intel Pentium based central processing unit designed on the left hand side of the motherboard.

  2. (4) PCI slots designed on the right hand side of the motherboard.

  3. (3) - 16 bit EISA slots designed at the bottom of the motherboard.

  4. (4) single Inline Memory Modules (SIMM's).

  5. (3) Dual Inline Memory Moduels (Supporting SDRAM PC100 or PC133 chips).

  6. (1) AT Keyboard.

  7. Other components need to plug into the PCI or EISA expansion slots on the motherboard.

  8. This motherboard design finally incorporated two Integrated Drive Electronics (IDE) connectors for connecting a PC's hard drive system directly to the motherboard. No longer was a seperate expansion card needed to control the hard disk drive and optical storage systems.

This hardware is considered obsolete and is explained here for reference purposes only.

The Micro ATX Motherboard

Everything to do with PC motherboard design seem to relate to them becoming smaller and more components being embedded into the motherboard directly. The innovation of ATX motherboard technologies permitted board manufacturer's to implement everything (sound, audio, and networking capabilities) into the design directly. This resulted in much more powerful motherboards and a far greater room for expansion and upgradability.

The Micro ATX motherboard pictured here is of a Micro ATX type. ATX is the predecessor to AT style boards, yet the Micro ATX board can be considered in the same family of ATX motherboards just in a smaller design structure.

Baby AT Motherboard with an Intel 486DX CPU under the heatsink and fan. A series of EISA slots line the right hand side.
  • Mini version of the ATX.

  • Best Used in "shuttle" and media center style PCs.

The motherboard pictured here can support the following technologies:

  1. Any Intel Pentium IV based central processing unit designed on the right hand side of the motherboard.

  2. (3) PCI slots designed on the right hand side of the motherboard.

  3. (1) 32 bit ISA slot designed at the bottom of the motherboard.

  4. (2) Dual Inline Memory Modules (DIMMS)

  5. (1) AT Keyboard.

  6. Other components need to plug into the PCI or ISA expansion slots on the motherboard.
The ATX Motherboard
The ATX motherboard picture here is the most common type of motherboard to be used in PC's at present day. ATX boards offer more room for expansion and are cheaper to implement into systems, than the other types of motherboards listed in this section.
Baby AT Motherboard with an Intel 486DX CPU under the heatsink and fan. A series of EISA slots line the right hand side.
  • Most popular motherboard style.

  • Best used in either a desktop or tower based PC.

The motherboard pictured here can support the following technologies:

  1. Any Intel Pentium IV based central processing unit designed on the right hand side of the motherboard.

  2. (6) PCI slots designed on the right hand side of the motherboard.

  3. (1) AGP slot designed specifically for high end video cards.

  4. (1) Modem Riser Card.

  5. (3) Dual Inline Memory Modules (DIMMS)

  6. (1) PS/2 Keyboard.

  7. (1) PS/2 Mouse.

  8. (1) Sound, (1) network, and (2) USB controllers.

  9. Other components need to plug into the PCI or ISA expansion slots on the motherboard.