范文编号:JD1080 范文字数:17681,页数:61 摘 要
This issue is low-cost microcontroller MCS-51 family of highly reliable functions constitute a signal generator applications. This design generates a binary control signal MCU operation to control the AD9850 to realize the function of waveform generation. Function Generator based on single chip and strong anti-interference, low power consumption, low cost, easy to implement, has high practical value. The system control microcontroller core 51 by the power supply module, MCU AT89S52 minimum system module, the keyboard interrupt module, function signal generator module, MAX7219 display module. Calculated by scanning the keyboard interrupt the required frequency, using numerical methods to control DDS chip AD9850 produced 100Hz-40MHz sinusoidal signal, 100Hz-5MHz square wave signal, the waveform output is stable and high precision. Use of MAX7219 drives four in one of eight out of two LED digital tube, showing the frequency of the current waveform. Modular system with C language programs to enhance readability, ease of AT89S52 on the module controlRealize the function of setting. 摘 要 I
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