針對生產現場的單片微型計算機一般與被測試對象、被控制對象相距較遠，容易受到各種干擾的侵襲，討論了來自單片微型計算機應用系統的內部和外部的干擾源、模擬通道、開關通道、供電系統的干擾及解決辦法。利用定時中斷抗干擾的方案解決了由干擾造成的“死機”現象，得到了抑制干擾的軟硬件實現方法。

To the single-chip microcomputer that used for the production field is general with were tested the object distance farther, easily suffer the assault of every kind of interference。this will require the single-chip microcomputer system to have very high and dependable, make it can resist the assault of every kind of interference.Therefore, anti- interference design is the applied system importantly constitute part.This is according to the circumstance of the actual production field, to discussed the inner part of the apply system with the exterior's interference source、analog channel's interference and solution、switch channel's interference and solution ;the power system's interference and solution .And to because the interference result in of" die machine" appearance bring upped soft solution scheme.