The waveform generator is one of the test equipments which is getting a widely applications in large-scale, ultra-large-scale integrated circuit chip testing and designing of digital systems. The general signal source, represented by function/arbitrary waveform generator, is wildly used in the modern testing field.
The graduation design project is programmable waveform generator.AT89S52 is the control MCU of this system, the digital-to-analog transform circuit is composed by DAC0832 and the external circuit, increase circuit is composed by LM358, LCD1602 show the code of the output waveform. This equipment can produce three kinds of cycle waveform: saw tooth, square and triangle. Additionally the system have the memory function when the power-down and it also can prevent program run out with the watchdog circuit.
This design of the waveform generator has many feature, like inexpensive, anti-jamming is Strong, relatively circuit is simple, frequency stability is high, frequency and amplitude is adjustable.
