At the time of researching the principle of parallel - to - serial convert and digital - to - analog convert , this article analyzes characteristics of the high speed circuit , the problem of the circuit and the resolvent of the problem 本文在研究高速数据复接与d a转换基本原理的同时，分析了高速电路的特点、存在的问题以及解决措施。
Coverage ranges from thermal properties and semiconductor materials to mosfets , digital logic families , memory devices , microprocessors , digital - to - analog and analog - to - digital converters , digital filters , and multichip module technology 覆盖范围从热性能和半导体材料的mosfet ，数字逻辑家庭，记忆体装置，微处理器，数位类比和模拟到数字转换器，数字滤波器，以及多芯片组件技术。
For the purpose of testing the function of extended ports , digital - to - analog conversion and analog - to - digital conversion , an auxiliary experiment board is made , it includes analog signal outputs , switch signal outputs , led circuit , eight - segment nixie tubes and a digital - to - analog conversion circuit 为了验证扩展口、 a d转换和d a功能，还自己制作一个包括8路模拟量输入、开关量输入、 8路led 、 4个数码管和d a转换电路辅助电路板。
The digital upward frequency conversion is the key element of the waveform synthesis . at the same time , basic theoretical analysis and optimum design are done for pci bus slave interface , fifo , transmit signal processor , digital - to - analog converter and logic control 本文对波形合成技术的核心? ?数字上变频进行了深入细致的研究和介绍，同时对波形合成器中的pci总线接口、先进先出缓冲器、发射信号处理、数模转换及逻辑控制等部分进行了分析和优化设计，给出了最佳设计方案。
