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The paper introduces the history, classification, key technical indicators and development of the signal generator. Then the paper introduces the component and the design of the hardware. Analyze PC104, CPLD, D/A and power mainly.PC104 is a kind of speciality controls bus, which is defined embedded control. The embedded control systems, which is small and stacking, is composed of PC104 main board and corollary equipment. It has small volume, strong function, high reliability and a range of temperatures, so it has application in various areas widely. The project selects the MAX II series of chip in Altera accomplishing entire design. Add the peripheral circuits to achieve the output of the various waveform.The signal generator is a common signal source, which has application in some fields, such as electronic circuit, autocontrol and scientific experiments. Itis a electrical signal equipment providing for strict technical requirements for electronic surveying and measurement. Therefore, signal generator, oscillograph, voltmeter and cymometer are one of the most fundamental. Almost all electricity parameters need to use the signal generator. So far, the signal generator hasalready had great development.The paper is based on PC104 design, selects CPLD-EPM1270T144C5N tocontrol, uses AD5725 to achieve D/A convert. Programming, debugging and si mulation with Quartus II. The signal generator has some merits, such as smallvolume, convenience job security and so on. In addition, it has also applicationin the quarlity testing and servocontrol of electronic product. It will have a very good market prospect.
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