dc.creator Salter, O. Carlysle en_US dc.creator Tellinghuisen, Joel en_US dc.date.accessioned 2006-06-15T14:45:05Z dc.date.available 2006-06-15T14:45:05Z dc.date.issued 1983 en_US dc.identifier 1983-FB-02 en_US dc.identifier.uri http://hdl.handle.net/1811/11781 dc.description $^{*}$Work supported by the Office of Naval Research. en_US dc.description Author Institution: Department of Chemistry, Vanderbilt University en_US dc.description.abstract In methods of photographic spectroscopy there is a need for precision measurement of a large amount of experimental data -- the positions and intensities of rotational lines, vibrational band heads, and calibration lines, on the photographic; plate. Microdensitometers and optical comparators permit one to measure the positions or sharp features with a precision of 1-2 $\mu m$: however the procedure of measuring, recording, and logging the data for further computer processing can be very tedious and time consuming. if done manually. To expedite this aspect of our work, we have designed and built a cheap($\sim$ \$2500, microcomputer included) control interface, by means of which a TRS-80 Model III microcomputer controls the motion of the plate on a microdensitometer and logs the optical density in digital form. In this paper we discuss various aspects of the interfacing task, including hardware and software for stepping motor control, analog-to-digital conversion, and extraction of line positions from the recorded data. en_US dc.format.extent 93112 bytes dc.format.mimetype image/jpeg dc.language.iso English en_US dc.publisher Ohio State University en_US dc.title INTERFACING A MICRODENSITOMETER TO A MICROCOMPUTER${^{*}}\$ en_US dc.type article en_US
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