Motherboard is the main computer circuit inside the PC, which holds the processor, memory and expansion slots, and connects directly or indirectly to every part of the PC.

主板是电脑中主要的电路板，其上安有处理器、内存和扩展槽，并直接或间接地与电脑各个部件相连。

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This is partly marketing talk: crack open an iPhone and you will find many of the paraphernalia—including a motherboard and microchips—that make up the guts of a PC too.

这一定程度上是营销言论，拆开一个iPhone，你就会发现，包括母版和微处理芯片，很多配件都和个人电脑上的一样。

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The compatibility and assembly of PC case desire, first, a relative compatible improvement in technique to be used for all current different styles of motherboard;

电脑机箱的兼容性和可装配性，一方面要求电脑机箱要因兼容主流型号的电脑主板，而在工艺上作出相应改进；

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One can envision these new players in the industry will assume leadership in specific roles within the value chain: Intel-like semiconductor companies building the LED chips, and equivalents of a PC motherboard manufacturer like ASUS packaging the chips into devices that will be used in a variety of end-use lighting applications.

FORBES: A New Source of Green Energy: LEDs

On that day my son Callum and I engaged in some father-son bonding by swapping the faulty motherboard on the family PC - the motherboard is the bit into which you plug all the other parts of a PC - processor, graphics card, memory et cetera.

BBC: How hardware hacking (almost) made me a fraudster

The exact reasons for the supposed switch aren't available, but there's speculation that it would be mutually beneficial for Intel and PC manufacturers: Intel would have more control over motherboard chipsets, while builders could save money on assembly and conveniently drive more outright PC sales.

ENGADGET: Intel rumored moving to non-upgradable desktop CPUs with Broadwell