Abstract
Signal generator, also known as source or oscillator, in the areas of production practices and technology has a wide range of applications. Curves of various wave equation can be expressed by trigonometric function. Can produce a variety of waveforms, such as the triangle wave, sawtooth, square wave (with square wave), sine wave signal generator circuit is called the function. Function Generator experiments and equipment testing at the circuit has a very wide range of uses. For example, in telecommunications, broadcasting, television systems, require radio frequency (RF) transmitter, where the RF wave is the carrier, the audio (low frequency), the video signal or pulse signal carried out, we need to generate high-frequency oscillator. Function signal generator of means, using dedicated chips DDS direct digital synthesis function generator: to generate arbitrary waveforms and achieve very high frequency, but its high cost.