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With regular features eight-way digital design Answer This paper introduces a series of 74 commonly used integrated circuit design of digital display devices Answer eight-way circuit design and functions. In addition to the browser Answer Answer basic functions, also has the timing, timing and alarm functions. Host through the default time for switching the default Answer time, the system will automatically countdown to complete. If the required timeframe was Answer, then the time will automatically stop if within the required timeframe Answer No, the system will be sent the buzzer ring, suggesting that the current round of presenters Answer invalid realize alarm function.
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200548604.doc