Experimental data acquisition and manipulation by microcomputer

To improve experiment management, we developed a microcomputer system which automatically displays, collects, manipulates and stores data in real-time. Upon completion of all experiments, it automatically performs statistical analysis, prints graphs and stores the results. The components required to accomplish these tasks include: (1) a microprocessor and visual monitor; (2) transducers, each with preamplifier, filter and amplifier; (3) couplers from each amplifier to the computer; (4) software to direct display, manipulation, statistical analysis and storage of data; and (5) hardware to allow real-time graphic and hard copy display. The resulting system allows sampling rates up to 300 Hz and accuracy of 0.20% full scale, 0-200 mm Hg. It provides great flexibility, efficiency and reliability in data management, and thereby facilitates the organization and completion of research protocols. It simplicity of design and operation makes it easy to use, and it is extremely cost effective. We present a method of laboratory microcomputerization as a practical alternative for management of physiological experimentation.