G. S. Herman-Giddens

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We have approached the study of the electrical activity of the heart by separating the work into two distinct phases - data acquisition and data analysis. The data acquisition program monitors the activity of the heart, samples as many as 24 electrodes simultaneously, and displays them to the investigator. It concurrently executes as many as eleven tasks,(More)
A high speed data acquisition system for experiments investigating the electrical activity of the heart is discussed with emphasis on the method of specifying and controllinq the experiment in progress. Provision is made for control by the investigator during the experiment of such things as sampling rate, initiation and duration of sampling, control of(More)
A simple, low-cost mechanical switch is used in transfering text files between computers of widely varying size, architecture, manufacturer, and geographic location utilizing standard serial interfaces, typically at 300-1200 baud. No special software is required since the standard utility programs of each computer are used to transmit and receive the text.(More)
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