You might have a desktop PC at work, school, or home. You might use one to work out tax returns or play the latest games; you might even be into building and tweaking computers. But how well do you know the components that make up a PC? Take the humble motherboard -- it sits there, quietly keeping everything running, and rarely gets the same attention as the CPU or graphics card. Motherboards are remarkably important though, and full of really cool technology.
So let's go all Grey's Anatomy, and dissect the motherboard -- breaking down its various parts and seeing what each bit does! There are other things a motherboard does e. Standard motherboards initially differ in terms of their size, and there are industry-wide standards that manufacturers tend to adhere to and plenty of others that don't.
The main sizes you're likely to come across are:. You can see a far more comprehensive list on Wikipedia but we'll just stick to standard ATX for simplicity, because the differences generally lie in the number of sockets available to be powered and connected; a bigger motherboard permits more sockets.
A motherboard is simply a big electronic printed circuit board, with lots of connectors to plug things into and hundreds, if not thousands, of feet of electrical traces that run between the various sockets. Theoretically, the board isn't needed: you could connect everything together by using a huge mass of wires. The performance would be terrible, though, as the signals would interfere with one another, and there would be notable power losses by using this method, too. We'll begin our breakdown by using a typical ATX motherboard.
The image below corresponds to an Asus ZPro Gamer and its appearance, features, and functions can be found in dozens more like it.
The only problem with the picture other than the motherboard being quite That's better, but there is still a lot of sockets and connectors to talk about!
Let's start near the top, with the most important one of all. The diagram has a structure labelled LGA This is the name used by Intel to describe the socket used to hold many of their CPUs.
LGA systems have lots of little pins in the motherboard, or in a socket on the board, to provide power and communications to the processor.Most of us in the world today use computers in our everyday lives but when asked as what makes it function, we have no idea.
This quiz on parts of a motherboard will enlighten you greatly. Search Speak now. Parts Of The Motherboard. Questions All questions 5 questions 6 questions 7 questions 8 questions 9 questions 10 questions 11 questions 12 questions 13 questions 14 questions 15 questions 16 questions 17 questions 18 questions 19 questions 20 questions 21 questions 22 questions 23 questions 24 questions 25 questions 26 questions 27 questions 28 questions 29 questions 30 questions 31 questions 32 questions 33 questions 34 questions 35 questions 36 questions 37 questions 38 questions 39 questions 40 questions 41 questions 42 questions 43 questions 44 questions 45 questions 46 questions 47 questions.
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Anatomy of a Motherboard
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It is the most 'central' part of a computer. All of the different parts of the computer are connected to the motherboard. This lets them work together. In most computers, the motherboard is a big green board, but many come in different colors like black, red and yellow. Electrical parts must be on the motherboard. These parts include transistors and resistors. Major parts that are attached to the board are able to be removed in the future so that they can be upgraded.
The CPU is an example of a part that is usually removable. Parts that are not "on-board" can be bought as a card. In fact, many of the on-board parts on today's computers were at one time an expansion card that became very popular. These were put on the board to free up the card slots for other things. There are also some rare motherboards that have plugs only for very specific parts.
All of the slots and plugs both inside and outside the computer case are shaped a certain way to accept a certain type of part. Some will not even accept parts even one generation behind, such as the CPU and memory. Others, like the video plug have not changed in years. Some of the plugs, such as the video, keyboard and mouse plugs, are a special color.
These colors make it easier to pair the plug to the port. The Octek Jaguar V motherboard from This board has few onboard peripherals, as evidenced by the 6 slots provided for ISA cards and the lack of other built-in external interface connectors.
Note the large AT keyboard connector at the back right is its only peripheral interface. The motherboard of a Samsung Galaxy SII; almost all functions of the device are integrated into a very small board. Motherboard facts for kids Kids Encyclopedia Facts.
All content from Kiddle encyclopedia articles including the article images and facts can be freely used under Attribution-ShareAlike license, unless stated otherwise. Cite this article:. This page was last modified on 22 Mayat A motherboard also called mainboardmain circuit boardsystem boardbaseboardplanar boardlogic board and mobo is the main printed circuit board PCB in general-purpose computers and other expandable systems.
It holds, and allows communication between, many of the crucial electronic components of a system, such as the central processing unit CPU and memoryand provides connectors for other peripherals.
Motherboard means specifically a PCB with expansion capabilities. As the name suggests, this board is often referred to as the "mother" of all components attached to it, which often include peripherals, interface cards, and daughtercards : sound cardsvideo cardsnetwork cardshard drivesand other forms of persistent storage; TV tuner cardscards providing extra USB or FireWire slots; and a variety of other custom components.
Similarly, the term mainboard describes a device with a single board and no additional expansions or capability, such as controlling boards in laser printers, television sets, washing machines, mobile phones, and other embedded systems with limited expansion abilities.
The term Logic board is brand specific, coined by Apple in the early s for the motherboards in Macintosh computers. Prior to the invention of the microprocessorthe digital computer consisted of multiple printed circuit boards in a card-cage case with components connected by a backplanea set of interconnected sockets.
In very old designs, copper wires were the discrete connections between card connector pins, but printed circuit boards soon became the standard practice. The central processing unit CPUmemory, and peripherals were housed on individual printed circuit boards, which were plugged into the backplane.
The ubiquitous S bus of the s is an example of this type of backplane system. The most popular computers of the s 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 building new computers compatible with the exemplars, many motherboards offered additional performance or other features and were used to upgrade the manufacturer's original equipment. During the late s and early s, it became economical to move an increasing number of peripheral functions onto the motherboard.
By the late s, many personal computer motherboards included consumer-grade embedded audio, video, storage, and networking functions without the need for any expansion cards at all; higher-end systems for 4D gaming and computer graphics typically retained only the graphics card as a separate component. Business PCs, workstations, and servers were more likely to need expansion cards, either for more robust functions, or for higher speeds; those systems often had fewer embedded components.
Laptop and notebook computers that were developed in the s integrated the most common peripherals. This even included motherboards with no upgradeable components, a trend that would continue as smaller systems were introduced after the turn of the century like the tablet computer and the netbook.
Memory, processors, network controllers, power source, and storage would be integrated into some systems. A motherboard provides the electrical connections by which the other components of the system communicate. Unlike a backplane, it also contains the central processing unit and hosts other subsystems and devices. A typical desktop computer has its microprocessormain memoryand other essential components connected to the motherboard. Other components such as external storagecontrollers for video display and soundand peripheral devices may be attached to the motherboard as plug-in cards or via cables; in modern microcomputers it is increasingly common to integrate some of these peripherals into the motherboard itself.
An important component of a motherboard is the microprocessor's supporting chipsetwhich provides the supporting interfaces between the CPU and the various buses and external components. This chipset determines, to an extent, the features and capabilities of the motherboard. Additionally, nearly all motherboards include logic and connectors to support commonly used input devices, such as USB for mouse devices and keyboards. Additional peripherals such as disk controllers and serial ports were provided as expansion cards.
Given the high thermal design power of high-speed computer CPUs and components, modern motherboards nearly always include heat sinks and mounting points for fans to dissipate excess heat. Motherboards are produced in a variety of sizes and shape called computer form factorsome of which are specific to individual computer manufacturers. However, the motherboards used in IBM-compatible systems are designed to fit various case sizes. As of [update]most desktop computer motherboards use the ATX standard form factor — even those found in Macintosh and Sun computers, which have not been built from commodity components.
A case's motherboard and power supply unit PSU form factor must all match, though some smaller form factor motherboards of the same family will fit larger cases. Computers generally use highly integrated, miniaturized and customized motherboards. This is one of the reasons that laptop computers are difficult to upgrade and expensive to repair.
Often the failure of one laptop component requires the replacement of the entire motherboard, which is usually more expensive than a desktop motherboard. It is a special type of integrated circuit socket designed for very high pin counts.Mobile Repairing Online.
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Newer Post Older Post Home. Subscribe to: Post Comments Atom.Motherboard Wiring Diagram — wiring diagram is a simplified enjoyable pictorial representation of an electrical circuit. It shows the components of the circuit as simplified shapes, and the gift and signal contacts between the devices. A wiring diagram usually gives opinion not quite the relative point and contract of devices and terminals on the devices, to encourage in building or servicing the device. A pictorial diagram would action more detail of the swine appearance, whereas a wiring diagram uses a more figurative notation to play up interconnections exceeding swine appearance.
A wiring diagram is often used to troubleshoot problems and to create distinct that every the connections have been made and that all is present.
Architectural wiring diagrams feign the approximate locations and interconnections of receptacles, lighting, and enduring electrical facilities in a building. Interconnecting wire routes may be shown approximately, where particular receptacles or fixtures must be upon a common circuit.
Wiring diagrams use suitable symbols for wiring devices, usually alternative from those used on schematic diagrams. The electrical symbols not isolated put it on where something is to be installed, but plus what type of device is monster installed. For example, a surface ceiling open is shown by one symbol, a recessed ceiling lighthearted has a alternating symbol, and a surface fluorescent fresh has complementary symbol. Each type of switch has a alternative tale and as a result realize the various outlets.
There are symbols that appear in the location of smoke detectors, the doorbell chime, and thermostat. A set of wiring diagrams may be required by the electrical inspection authority to approve association of the residence to the public electrical supply system. Wiring diagrams will along with intensify panel schedules for circuit breaker panelboards, and riser diagrams for special facilities such as flare alarm or closed circuit television or additional special services.