When in 1989, Carlos Neves, the current CEO of Digidelta Software, was approached about creating an information system capable of managing the effective belonging to the Farmers Association of the little City of Torres Novas, he was far from imagining the success that the Computer Program for Animal Health (PISA) would achieve.
Carlos Neves began developing this system in 1989 using COBOL-based Operating System MS-DOS as the programming language. The development lasted a few months and its implementation was swift. In the same year, the Regional Directorate of Ribatejo Oeste, in the person of Dr. Silva Cordeiro, asked all the ADS in the country to draw up a list of all your holdings and stocks.
 
In an era where the IT in Portugal was still in its early stages, the ADS of Torres Novas managed to get distinguished from the others when they presented an impressive computerized list that contrasted with the handwritten lists  prepared by other entities.
 
Impressed with the list obtained by PISA, the officers of the Directorate General of Forestry (now called the Directorate General of Veterinary Medicine - DGV), sought more information on the application. Already aware of the possibilities allowed by the system, they promoted an immediate submission of the application to all responsible for all Regional Directorates of Agriculture (DRA) in the country.
This meeting allowed for a good analysis of the actual characteristics of the PISA and caused a great impression on everybody present. The widespread interest in the system meant that it was immediately decided that new modules would be created to meet the needs of animal health monitoring within the scope of each ADS: The Laboratory module which would manage the results of laboratory tests and the introduction Record of Individual Animal.
 
Official system

 

In 1990, the Ministry of Agriculture adopts the PISA as the Official System for Animal Health in Portugal. The pilot test of the new version was made in the Regional Directorate of Agriculture of Ribatejo e Oeste, spreading later to all regional directorates, directorates of veterinary intervention (DIV), Veterinary Intervention Units (NIV), laboratories and other entities.
 
Three years later it was created the first version of the field solution . This important tool was designed to assist the veterinary intervention Brigades in their field work. Not only it facilitated the integration of data collected in the field, but it also reduced the number of data entry errors into system. 1993 was also the year that marked the start of the  remote assistance service by the Digidelta Software. This was an important resource for the immediate support of any problems and was already done remotely.
PISA had become a key tool for the management and control of animal health in Portugal and in 1997 it adopted the Organic Law for Animal Health in Portugal by the DGV. 

  
Taking advantage of the technological advances, the development of a new version of the PISA called PISAwin's was initiated in 1998. Developed in Visual Basic 6 it was supported by Microsoft Access Databases, which represented significant technical and functional improvements. The transfer and synchronization of data between different databases were done via email. The beginning of its implementation took place in 2000 and two years later, the PISA also reached to the Azores.
 
In 2005, again in light of the rapid evolution of information technology, began developing a new version. The PISA.net is the most current version of this system and presents a new set of unique features that allow a complete and accurate management of all information on control of the Animal Health in Portugal or any other territory. Among the most important features introduced highlight the Propagation System Intelligent Data (SPD) that manages data synchronization between jobs PISA and the central database. See more about the characteristics of PISA.net.  
 
The implementation of the newest version - PISA.net - was finished in 2008

 

Close to the end of year 2008, the new version was already installed on all workstations in the territory.