文档介绍：本科毕业设计(论文)外文翻译原文
学生姓名:
院(系):电子工程学院
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完成日期:2010年4月20日
Expanding the Features of a VI
You can choose one of many LabVIEW VI templates to use as a starting point. However, sometimes you need to build a VI for which a template is not available. This chapter teaches you how to build and customize a VI without using a template.
Building a VI from a Blank Template
In the following exercises, you will open a blank VI and add Express VIs and structures to theblock diagram to build a new VI. You will build a VI that generates a signal, reduces the number of samples in the signal, and displays the resulting data in a table on the front panel. When plete the exercises, the front panel of the VI will look similar to the front panel in Figure 3-1.
You plete the exercises in approximately 30 minutes.

Figure 3-1. Front Panel for the Reduce Samples VI
Opening a Blank VI
If no template is available for the task you want to create, you can start with a blank VI and add Express VIs to plish the specific task. Complete the following steps to open a blank VI.
In the LabVIEW dialog box, click the arrow on the New button and select BlankVI
from the shortcut menu or press the <Ctrl-N> keys to open a blank VI.
Notice that a blank front panel and block diagram appear.
Note You also can open a blank VI by selecting Blank VI from the Create new list in
The New dialog box or by selecting File»New VI from the front panel or block
diagram menu bar.
2. If the Functions palette is not visible, right-click any blank space on the block diagram to bring up the temporary version of the Functions palette. Click the thumbtack, shown at left, in the upper left corner of the Functions palette to
place the palette on the screen.
Note You can right-click on a blank space on the block diagram or the front panel to bring up the Functions or Controls palettes.
Adding an Express VI that Simulates a Signal
Complete the following steps to find the Express VI you wan