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Motherboard ○꠹｜Definition｜1st｜20261025133332-00-⌔

Motherboard - Wikipedia

Motherboard

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A motherboard, also known as a mainboard, system board, logic board, and informally mobo (see § Nomenclature), 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 memory, and provides connectors for other peripherals.

Unlike a backplane, a motherboard usually contains significant sub-systems, such as the CPU, the chipset’s input/output and memory controllers, interface connectors, and other components integrated for general use.¹${}^{:48}$

Printed 2026-10-25.

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Footnotes

1. Rosch, Winn L. (1992). The Winn L. Rosch Hardware Bible (5th ed.). Brady. p. 53. ISBN 0789717433. ↩

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