Tarea De Motherboards

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Motherboard
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Motherboard for an Acer desktop personal computer, showing the typical components and interfaces that are found on a motherboard. This model was made by Foxconn in 2007, and follows the ATXlayout (known as the "form factor") usually employed for desktop computers. It is designed to work with AMD's Athlon 64processor

A motherboard of a VaioE series laptop (right)
A motherboard (sometimes alternatively known as the mainboard, system board, planar board or logic board,[1] or colloquially, a mobo) is a printed circuit board (PCB) found incomputers and other expandable systems. It holds many of the crucial components of the system, such as the central processing unit (CPU) and memory, and provides connectors for other peripherals.Unlike a backplane, a motherboard contains significant sub-systems such as the processor.
Motherboard specifically refers to a PCB with expansion capability - the board is the "mother" of all components attached to it, which often include sound cards, video cards,network cards, hard drives or other forms of persistent storage, TV tuner cards, cards providing extra USB or Firewire slots, and avariety of other custom components. (The termmainboard is applied to devices with a single board and no additional expansions or capability - in modern terms this would include controlling boards in televisions, washing machines and other embedded systems, which are not true motherboards.)
Contents  [hide]  * 1 History * 2 Design * 2.1 CPU sockets * 2.2 Integrated peripherals *2.3 Peripheral card slots * 2.4 Temperature and reliability * 2.5 Form factor * 3 Bootstrapping using the BIOS * 4 See also * 5 References * 6 External links |
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[edit]History
Prior to the advent of the microprocessor, a computer was usually built in a card-cage case or mainframe with components connected by a backplane consisting ofa set of slots themselves connected with wires; in very old designs the wires were discrete connections between card connector pins, but printed circuit boards soon became the standard practice. The Central Processing Unit, memory and peripherals were housed on individual printed circuit boards which plugged into the backplate.
During the late 1980s and 1990s, it became economical to move anincreasing number of peripheral functions onto the motherboard. In the late 1980s, motherboards began to include single ICs (called Super I/O chips) capable of supporting a set of low-speed peripherals:keyboard, mouse, floppy disk drive, serial ports, and parallel ports. By the late 1990s, many personal computer motherboards supported a full range of audio, video, storage, and networking functionswithout the need for any expansion cards at all; higher-end systems for 3D gaming and computer graphics typically retained only the graphics card as a separate component.
The most popular computers such as the Apple II and IBM PC had published schematic diagrams and other documentation which permitted rapid reverse-engineering and third-party replacement motherboards. Usually intended for buildingnew computers compatible with the exemplars, many motherboards offered additional performance or other features and were used to upgrade the manufacturer's original equipment.
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[edit]Design

The Octek Jaguar V motherboard from 1993.[2] This board has few onboard peripherals, as evidenced by the 6 slots provided for ISA cards and the lack of...