From the beginning of the computational revolution there was interest for the intelligent machines. After the failure of the searching methods or Artificial Intelligence applied to real problems, a new approach, Computational Intelligence, recaptured the road basing on structures copied from nature. The (artificial) neural networks emulate in a simplified way the operation of the biological networks. Research has been directed primarily to computer simulation of the proposed algorithms, which moves away from the real behavior of the biological neurons. This article shows a development of a system for designing, simulating, creating, and interacting with neural netwoks implemented in a physical device, to come closer to the biological concept. The target device, a FPGA, is an arrangement of logical elements, whose interconnection points can be programmed, wich better models the evolutionof a biological brain.