Inside the core there are three important models, such as digital-to-analog converter (DAC), voltage comparator and some other digital logic units.

内核部分又分为三个功能模块，如数摸转换器(DAC)，电压比较器和数字逻辑单元。

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To stress the application of Karaugh map on designing of coding circuits in parallel-comparator ADC in terms of the design of combinational logic circuits.

根据组合逻辑电路的设计方法，突出用卡诺图化简逻辑表达式在并联比较型A/D转换器编码电路设计中的应用。

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Through adding a zero-crossing comparator and optimizing the inverter switching logic, this method which is based on the traditional two-state hysteresis control can achieve three-state outputs.

该方法是在传统的两态滞环控制的基础上，增加过零比较器，通过优化逆变器的开关逻辑，从而实现滞环控制下并网逆变器的三态输出。

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