【摘要】 本文介绍一种以AT89C5 2单片机为控制核心 ,采用直接数字波形合成技术产生方波、三角波、锯齿波、正弦波和其他周期信号波形的方法。其频率范围在 0 .0 0 1Hz～ 999.9Hz之间 ,幅度在 0～ 2 0V无级连续可调 ,波形失真度 :<0 .5 %。具有稳定性好、性能优越、功能强大、操作方便等特点 ,使用价值高。更多还原

【Abstract】 This article introduces a kind of designing method t hat adopts AT89C52 to control the device as the core and uses digital wave synth etic technology to produce square wave, triangular wave, saw tooth wave , sinusoidal wave and othe r period function signal wave. The frequency range is in 0.001Hz～999.9Hz, the amplitude is adjustable in succession as no grade in 0～20V,wave distortion: < 0.5%. It is good in stability, excellent in the performance and convenient in op eration and has high value in application.更多还原