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Chips are typically connected to a base layer with layers of copper to allow the chips to send electrical signals to larger systems, like circuit boards.—Jordan Novet,katie Tarasov, CNBC, 4 Mar. 2026 E‑waste is the fastest‑growing solid waste stream in the world and includes everything from old phones and tablets to batteries and circuit boards.—Neetika Walter, Interesting Engineering, 25 Feb. 2026 When the summer heat arrives, the temperatures can cause circuit boards to become damaged or your batteries to explode.—Ashlyn Needham, Southern Living, 14 Feb. 2026 Inside are ultra-sensitive textile strain sensors and a small wireless circuit board.—Kurt Knutsson, FOXNews.com, 1 Feb. 2026 See All Example Sentences for circuit board