A design for an interfase to control and record real time event with a Commodore 64.
José Cohen, Elías Robles, Centro de Investigación en Alimentación y Desarrollo, Luis Enrique Fierros · 2011
This paper describes the design of an interface for the Commodore 64 which uses the parallel users port for input and output. It shows how to program the users port fines and it includes o BASIC program to exemplify the control and recording of real time events.