Use of concept maps to analyze students' understanding of the I/O subsystem
The Input/Output topic is mandatory in the Computer Architecture branch of the computing curricula. However, in our experience it is a rather complex topic for the students to understand.
 This paper presents the process followed to analyze the concept maps built by the students at the end of the "Computer Structure" subject, in the second semester of the degree course.
 The analysis process is explained because we had to adapt the software used in other disciplines to our needs. Merging all the concept maps showed that some relationships were missing, some were very messy and others were very strong. Based on the results achieved, some points need to be reinforced during the learning process.