基于51单片机的演讲自动报时器

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style='color:#111;'> 37.92KB </span>","children":null,"spread":false},{"title":"演讲自动报时器 (50).Zip <span style='color:#111;'> 3.93KB </span>","children":null,"spread":false},{"title":"演讲自动报时器 (22).Zip <span style='color:#111;'> 3.44KB </span>","children":null,"spread":false},{"title":"演讲自动报时器 (9).Zip <span style='color:#111;'> 2.19KB </span>","children":null,"spread":false},{"title":"演讲自动报时器 (43).Zip <span style='color:#111;'> 5.94KB </span>","children":null,"spread":false},{"title":"演讲自动报时器 (7).Zip <span style='color:#111;'> 7.82KB </span>","children":null,"spread":false},{"title":"演讲自动报时器 (47).Zip <span style='color:#111;'> 6.19KB </span>","children":null,"spread":false},{"title":"演讲自动报时器 (45).Zip <span style='color:#111;'> 6.18KB </span>","children":null,"spread":false},{"title":"演讲自动报时器 (42).Zip <span style='color:#111;'> 12.58KB </span>","children":null,"spread":false},{"title":"演讲自动报时器 (12).Zip <span style='color:#111;'> 2.91KB 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style='color:#111;'> 5.87KB </span>","children":null,"spread":false}],"spread":false},{"title":"演讲自动报时器.PrjPCB <span style='color:#111;'> 39.66KB </span>","children":null,"spread":false},{"title":"演讲自动报时器.Annotation <span style='color:#111;'> 0B </span>","children":null,"spread":false},{"title":"演讲自动报时器.SchLib <span style='color:#111;'> 39.50KB </span>","children":null,"spread":false},{"title":"演讲自动报时器.PcbLib <span style='color:#111;'> 145.50KB </span>","children":null,"spread":false},{"title":"Project Outputs for 演讲自动报时器","children":[{"title":"演讲自动报时器.NET <span style='color:#111;'> 255B </span>","children":null,"spread":false},{"title":"Status Report.Txt <span style='color:#111;'> 222B </span>","children":null,"spread":false}],"spread":true},{"title":"演讲自动报时器.PcbDoc <span style='color:#111;'> 288.00KB </span>","children":null,"spread":false},{"title":"演讲自动报时器.SchDoc <span style='color:#111;'> 84.00KB </span>","children":null,"spread":false},{"title":"演讲自动报时器.REP <span 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