This is based on 51 Singlechip ADC0804 drive, I have used, the program no problem.

AD试验
......\C程序
......\.....\ad
......\.....\ad.hex
......\.....\ad.lnp
......\.....\ad.M51
......\.....\ad.Opt
......\.....\ad.plg
......\.....\ad.Uv2
......\.....\ad_Opt.Bak
......\.....\ad_Uv2.Bak
......\.....\AD测试程序.C
......\.....\AD测试程序.LST
......\.....\AD测试程序.OBJ
......\.....\STARTUP.A51
......\.....\STARTUP.LST
......\.....\STARTUP.OBJ

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Nothing．