A motherboard is the most complicated component in a computer. Notes If you are interested in learning about legacy motherboards and their features, see. amotherboard looks like in more detail, but our primary emphasis is just what it CPUs, to take some of the load off of the motherboard; these, together with. Disclaimer: Specifications and information contained in this manual are furnished for informa- tional use only and subject to change without notice, and should.
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The motherboard includes components crucial to the functioning of a computer. Among them, the Central Processing Unit and Random Access. How Motherboards Work. Motherboard Layouts. • The particular way in which the components are positioned on a motherboard is called the form factor. Computer nvrehs.info - Free download as PDF File .pdf), Text File .txt) or Download as PDF, TXT or read online from Scribd . Page Maker Notes.
Most CPUs have an internal cache memory built into the processor which is referred to as Level 1 or primary cache memory.
This can be supplemented by external cache memory fitted on the motherboard. This is the Level 2 or secondary cache. In modern computers, Levels 1 and 2 cache memory are built into the processor die. If a third cache is implemented outside the die, it is referred to as the Level 3 L3 cache.
Expansion Bus PCI slots. Expansion boards cards plug into the bus. PCI is the most common expansion bus in a PC and other hardware platforms.
Buses carry signals such as data, memory addresses, power, and control signals from component to component. Expansion buses enhance the PCs capabilities by allowing users to add missing features in their computers by slotting adapter cards into expansion slots.
Chipsets The Computer Chip-sets A chipset is a group of small circuits that coordinate the flow of data to and from a PC's key components. Now you must be curious, why it is called the motherboard? The motherboard is a Printed Circuit Board which acts as the main platform for communication between all other components of a system.
All the other computer parts are either directly installed or connected to various motherboard components and all the data is transferred between them through the motherboard. The AT means the board consists of advanced technology AT power connectors. There are two power connectors of 6 pin each mounted on the AT motherboards.
The ATX connector on the motherboard consists of a single connector. Let us discuss various motherboard components and know their definition and role. Expansion Slots ISA slots.
These were the oldest expansion slots in the history of motherboards. Conventional display cards or sound cards were installed in these slots. PCI Slots. The PCI slot is one of the important motherboard components today and is vastly used to install add-on cards on the motherboard. The PCI supports bit high-speed bus.
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.
Main article: Comparison of computer form factors Motherboards are produced in a variety of sizes and shape called computer form factor , some 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. Laptop 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 due to a large number of integrated components and their custom shape and size. The motherboard layout for laptops depends on the laptop case. It is a special type of integrated circuit socket designed for very high pin counts.
A CPU socket provides many functions, including a physical structure to support the CPU, support for a heat sink, facilitating replacement as well as reducing cost , and most importantly, forming an electrical interface both with the CPU and the PCB. CPU sockets on the motherboard can most often be found in most desktop and server computers laptops typically use surface mount CPUs , particularly those based on the Intel x86 architecture.
Integrated peripherals[ edit ] Block diagram of a modern motherboard, which supports many on-board peripheral functions as well as several expansion slots With the steadily declining costs and size of integrated circuits , it is now possible to include support for many peripherals on the motherboard.