【正文】
our parts are property setting, signal generating, wave showing and date saving. A. Panel of Generator In this system the panel are divided to property setting panel() and total structure panel() . Main options in the first one are frequency, amplitude, duty cycle and samples etc. about signal. These properties can be set in this panel. Total structure panel just includes four parts that were presented above and some additional parts. Figure Set Panel Structure Panel B. Function about Instruments The Virtual Function Signal Generator can generate basic waves such as Sine wave , special waves like formula wave and some kinds of noise. Signal’s frequency can be regulated delicately or roughly. Property can be reset quickly and be used as subprogram sometimes. Moreover has the generator functions like wave showing and date saving etc. III. SOFTWARE ABOUT VIRTUAL FUNCTION SIGNAL GENERATOR The Virtual Function Signal Generator was designed base on Labview . There are three modules which pose this system: module of property setting, wave generating, wave showing and saving. A. Module of Property Setting Frequency setting and property resetting are two important parts of this module. How to change frequency value multiply is explained in . No