A Commodore 64-based interface system for the operant laboratory

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7 Scopus citations


A system of interfaces for the Commodore 64 (C-64) microcomputer for use in the operant laboratory is described. This system frees the experimenter from limitations on the number of I/O lines available on the user port of the C-64 and offers the control of operant chambers for a low cost. Subroutines in machine code to control the interfaces, offering millisecond timing of external events, are presented. A sample BASIC program demonstrates how the subroutines are called from BASIC to run a simple discrimination experiment.

Original languageEnglish (US)
Pages (from-to)27-33
Number of pages7
JournalBehavior Research Methods, Instruments, & Computers
Issue number1
StatePublished - Jan 1990
Externally publishedYes

ASJC Scopus subject areas

  • Experimental and Cognitive Psychology
  • Psychology (miscellaneous)
  • Psychology(all)


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