This paper introduces a blueprinter system controlled by AT89C51 single chip microcomputer. The counter pulse circuit and the programme flow chart are given in detail.
本文介绍了一个AT89C5 1单片机在控制工程晒图机方面的应用实例，特别介绍了计数信号的获取和处理，并给出了详细的程序框图。
Imperial Tobacco intends to maintain its ADR facility as a Level I programme to enable investors to retain their ADRs, which will be traded on the over-the-counter market in the USA.
帝国烟草计划维持其美国存托凭证工作，作为一个使投资者维持其美国存托凭证的一级项目，将在美国的柜台市场上进行交易。
Imperial Tobacco intends to maintain its ADR facility as a Level I programme to enable investors to retain their ADRs, which will be traded on the over-the-counter market in the USA.
帝国烟草计划维持其美国存托凭证工作，作为一个使投资者维持其美国存托凭证的一级项目，将在美国的柜台市场上进行交易。
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