摘要
通过对ＭＣ１４４３３在ＰＬＣＡ／Ｄ转换中的应用研究，给出一种价格低廉、精度较高的ＰＬＣＡ／Ｄ接口和实现．研究结果及生产实践证明：该接口测量范围为０～１９９９，精度为０．１％．
Based on the study of the application of MC14433 in PLC A/D converter, a PLC A/D interface of low cost and high accuray is realized. The measurement range of the interface is 0～1999, and the accuracy is 0.1%, which are proved by the research results and practical production.
