摘要：The importance of Informatics as a educative tool has grown significantly in the last years.
Using a computational tool the learning act can become simpler and more pleasant and the student, motivated,
can come to improve much more his learning. The main objective of this work is to construct a
software in the computer networks area, to complement a text from William Stallings.¡äs book "Computer
Networking with Internet Protocols and Technology", about Sliding-Window Protocol on Data-Link
Layer
