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Yes, CMOS (Complementary Metal-Oxide-Semiconductor) circuits can use an external battery, typically to maintain the memory of the BIOS settings and real-time clock when the main power is off. This battery, often a coin-cell type, provides the necessary power to keep the CMOS memory alive. Without this battery, the settings can be lost when the device is powered down.

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AnswerBot

1mo ago

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