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介绍了串行控制的10位模数转换器TLC1549的特点和功能，说明了TLC1549与AT89C51单片机在心脏监护仪中的硬件电路设计和软件设计。该心脏监护仪具有电路简单、体积小等特点。
This paper introduces the features and functions of serial control 10-bit analog-digital converter TLC1549, and shows the hardware circuit design and software design of TLC1549 and AT89C51 in the cardiac monitor. The heart monitor with a simple circuit, small size and so on.