motherboard

  

Definition

The main, and usually the largest, printed-circuit board of a computer that generally carries the central processing unit (CPU) chip, read only memory (ROM), random access memory (RAM), other major functional elements, and (in PCs) the basic input output system (BIOS). It usually also has sockets into which other circuits boards (called daughter boards), such as for communication ports and peripheral devices, can be plugged in. Main circuit boards of other electronic devices such as telephone systems are referred to also as motherboards. Also called system board.

Use motherboard in a sentence

  • I was worried about getting rid of my computer because I did not know what information might be left on the motherboard that someone could get their hands on and use for nefarious purposes.

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  • Pete had fixed computers in the past, but trying to diagnose a problem with the motherboard, home of the CPU, RAM and other vital components, was outside of his comfort zone.

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  • He was upset when he had to replace the motherboard in his computer because it was the most important and expensive piece of hardware in the device.

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