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pcb布线的模拟和数字干扰

如题, 我的电路里, 有用到数字电阻,  大家知道, 单片机要和数字电阻相连, 而数字电阻要接入模拟电路里,  那么, 请问是不是需要做什么,来防止模拟和数字部分之间的干扰呢?