Abstract
An instrument is described which is used to multiplex the “ready” and “external sync” lines of an IBM 1800’s data channel to 15 external devices. Used with the digital output registers of the computer, the device facilitates the interfacing of non-IBM peripheral devices to the 1800. The multiplexer can be used in any application in which a pair of lines needs to be shared among several devices.
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The construction of this device was supported in part by U.S. Office of Education Grant OEG 5-70-0030(508) to Emanuel Donchin and by the University of Illinois Research Board. The authors would like to acknowledge with thanks the assistance of James Hawtree. Reprint requests should be addressed to Emanuel Donchin at the Department of Psychology, University of Illinois, Champaign, Illinois 61820.
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Verma, S., Donchin, E. A “hand-shaking” multiplexer for the IBM 1800. Behav. Res. Meth. & Instru. 4, 327–330 (1972). https://doi.org/10.3758/BF03207317
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DOI: https://doi.org/10.3758/BF03207317