DATA ACQUISITION SYSTEM FOR ULTRAHIG RESOLUTION STEM

真空发生器HB 501的自动数据采集系统 超高分辨率专用扫描透射电子显微镜 正在开发中。这类计算机的新分析能力 电子显微镜需要新的方法使数据计算机化 采集和分析，正是由于这个原因，我们被要求 构建我们自己的系统而不是组装商业产品。的 数据采集系统已完成和接近完成的组件 从显微镜获得X射线光谱，并进行广泛的 提取化学信息的数学和物理方法 关于观察中的样本。该系统由一个 Macintosh II计算机，带有多个National Instruments接口插件 公交卡和一个广泛的计算机程序，使用Macintosh和 控制Macintosh用户界面的National Instrument例程， 收卡费采集系统的组成部分处于活动状态 发展，但一些几个月远离完成是光明和黑暗的 场成像和电子能量损失模式。

An automated data acquisition system for the Vacuum Generators HB 501 ultrahigh-resolution dedicated scanning transmission electron microscope is being developed. The new analytical capabilities of this class of electron microscope require fresh approaches to computerization of data acquisition and analysis and it is for this reason that we were required to construct our own system rather than assemble commercial products. The completed and nearly completed components of the data acquisition system obtain x-ray spectra from the microscope and perform a wide range of mathematical and physical procedures to extract chemical information concerning the specimen under observation. The system is comprised of a Macintosh II computer with several National Instruments interface plug-in bus cards and an extensive computer program that uses Macintosh and National Instrument routines to control the Macintosh-user interface and the cards. Components of the acquisition system are under active development, but some months away from completion are the bright and dark field imaging and the electron energy loss modes.