AT89C2051 6 Bit LED Digital Elektronische Uhr Produktionssuite Zum Selbermachen Kits
8,21 €
③Alarm clock function: short press S1 twice, the display state is 22:10:00, and the colon is long on. Press S2 to add 1 to the hour, and press S3 to add 1 to the minute. The second is not adjustable.
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