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Cǎiyòng AT89C2051 dānpiànjī xiě de xuánzhuǎn dēng yǔ bàojǐng qì P1.0 Zhì P1.7 Wèi IO kòngzhì 8 gè LED dēng,p3.7 Jiē lǎbā,P3.2 Kāiguān zhì dì wéi kě kòng kāiguān!
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AT89C2051 microcontroller written in rotating lights and alarm P1.0 to P1.7 IO control 8 LED lights, p3.7 connected speaker, P3.2 switch for controllable switch