Abstract
Many psychologists avoid using microcomputers in teaching and research laboratories because they lack the experience and knowledge necessary for interfacing. A $1 electronic component can connect external circuits into any computer. For output interfacing, circuits are available to control external devices with one or no additional components.
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Perera, T.B. Universal one- and two-component interfacing techniques. Behavior Research Methods & Instrumentation 12, 236–237 (1980). https://doi.org/10.3758/BF03201602
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DOI: https://doi.org/10.3758/BF03201602