Chemistry Laboratory Experiments Based on Handheld Personal Computers

化学（12）通过使用手持个人计算机（HPC），在入门化学实验室引入计算机化数据采集。这是一种负担得起的方法，允许每个学生工作站都有单独的计算机，而不会占用现有的实验室空间。这些计算机虽然比PC小得多，但对于大多数实验室应用来说功能足够强大，并且其操作方式与传统计算机的屏幕显示非常匹配。它们使用类似的操作系统和编程语言以及传统的串行数据转换器。软件的设计与PC的传统图形窗口非常匹配，大多数实验包括在传统PC上进行的基于Web的实验前和实验后练习，包括使用几乎相同的命令和屏幕外观的模拟。其目标是提供一种具有成本效益的方法来修改现有的课程，以反映现代化学仪器和计算机在实验室中的作用。目前正在扩大课程中所包括的、经调整后可与HPCS一起使用的实验类型，重点是选择那些具有较强视觉成分的实验，例如数据在几分钟内以图表形式出现的实验。这样的短实验允许多次运行，并允许视觉比较实验条件变化的影响。该计划在未来五年内影响了大约3000名学生，并有很大的潜力成为其他机构的典范。

Chemistry (12) Computerized data acquisition is introduced in introductory chemistry laboratories through use of handheld personal computers (HPCs). This is an affordable approach that permits individual computers to be available at each student work station without crowding existing laboratory space. These computers, although much smaller than PCs, are powerful enough for most laboratory applications and operate in manner that closely matches the screen display of conventional computers. They use similar operating systems and programming languages and conventional serial data converters. Software is designed to closely match the conventional graphics windows of PCs and most experiments include Web based prelab and post lab exercises on conventional PCs, including simulations that use nearly identical commands and screen appearance. The goals are to provide a cost effective method to modify existing courses to reflect modern chemical instrumentation and the role of computers in laboratories. The types of experiments included in the curriculum and adapted for use with the HPCS are being expanded, with emphasis on selecting those with a strong visual component, such as where the data appears as a graph in a few minutes. Such short experiments permit multiple runs and allow visual comparisons of the effect of variations in experimental conditions. The program affects approximately 3000 students over the next five years and has strong potential to serve as a model at other institutions.