波形表

After that, all units of the control subsystem including SCI port, switching group, indicator lights, operation lever, TKM, microampere meter control unit and waveform generation module are detailedly elaborated in designing principles, designing methods and implementing aspects.

在此基础上，对主控系统的每个模块，包括串口通信模块、开关组、状态显示灯组、操纵杆、探空码模块、微安表控制模块、示波器显示控制模块和示波器显示波形产生模块进行了详细的阐述，说明了设计原理、设计方案、实现方法，给出了硬件控制程序和流程。

In the field of measurement and display, it ranges from ampere meter, Voltage Meter and fault current state directives to power factor, wattful power, wattless power, frequency, and even harmonics, the fault condition wave acquisition, and so on.

在测量、显示这块，如电流表、电压表、故障电流及状态指示，以及功率因数、有功功率、无功功率、频率，甚至谐波，故障状态的波形捕捉等等。

A number of GPIB data acquisition products appeared throughout the 1970s and early 1980s, including voltmeters, digitizers, multiplexers, switches, digital I/O, D/A converters, and simple arbitrary waveform generators.

一定数量的GPIB 数据采集产品出现在70 年代和80 年代初期过程中，包括电压表，数字化器，多重通道，开关，数字式I/O， D/A 交换器，并且简单的任意信号波形发电器。

In the paper,using three methods,including C language,Matlab and DSP Builder,producing the arbitrary waveform initialization data of the sine wave,the triangular wave,the saw-tooth wave and the square-wave.Programming,parameter setting and waveform simulation are described to every method detailedly.

DDS系统一般包括系统时钟、频率预置与调节电路、相位累加器、ROM查找表，输出的数据通过外接的D/A转换器和滤波器完成波形输出。

On the other hand, the more important thing is because the urban housing is a kind of heterogeneity products.

另一方面，更重要的是由于城市住房是一种异质性产品。

Climate histogram is the fall that collects place measure calm value, cent serves as cross axle for a few equal interval, the area that the frequency that the value appears according to place is accumulated and becomes will be determined inside each interval, discharge the graph that rise with post, also be called histogram.

气候直方图是将所收集的降水量测定值，分为几个相等的区间作为横轴，并将各区间内所测定值依所出现的次数累积而成的面积，用柱子排起来的图形，也叫做柱状图。