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The fundamental idea of this article is to control a steps motor using the parallel port of a computer and demonstrate the temporary efficiency of the applications that are executed in prepared systems to execute tasks of real time. To take advantage of to the maximum capacity of strict real time that RT-Linux offers us for the control of electric workings. A small software is developed in language C that sent the signs to the parallel port in the necessary time. This software is not designed with commercial, only allows to carry out tests on the control circuit designed for this purpose. [ABSTRACT FROM AUTHOR]

The work presented in this paper is a complement to the control and acquisition tasks which were explained in "Application of RT-Linux in the Control of Steps Motors. First Part", so that those both real time tasks can be fully related in order to make the whole control system more accurate. The employed techniques are those of Real Time Taking advantage of the possibilities of the micro kernel RT-Linux and the free software distributed in the Unix/Linux operating systems. The signals are obtained by means of an AD converter and are shown in screen using Gnuplot. [ABSTRACT FROM AUTHOR]