Computerized Acquisition and Processing of Isotopic Mass Spectra

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Abstract
An IBM 1130 computing system is being used as a data processing unit for a number of mass spectrometers. Interfacing has been developed to allow input to the computer of both digital and analog signals. Provision has been made to accept data on a real-time basis from a mass spectrometer using the cycle-steal technique. Data so accumulated can be stored in the magnetic disk memory until processing is desired. Programs have been written that accumulate the data and process it into a final report. Programs associated with the accumulation of data are written in IBM 1130 Assembly language to facilitate data word manipulation and to allow hardware activation. Processing programs are written in IBM 1130 FORTRAN IV language. These programs provide for the calibration of the mass spectrometer and reduction of the raw data to a meaningful form.

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