在LABVIEW开发平台下，结合测试与信号处理理论设计下述虚拟仪器：
1　　函数发生器；
2　　频谱分析仪；
3　　消噪演示仪；
4　　串口通信演示仪。(Under the LABVIEW development platform, combining the test and signal processing theory, the following virtual instruments are designed.

1 function generator;

2 spectrum analyzer;

3 de-noising demonstrator;

4 serial communication demonstration instrument.)