The MC205 minilab digitalizes the photograms of the negative films, make analysis and corrections of color and luminosity and print by photoexposition in photographic paper with the lesser intervention of the operator.

VOXEL Engenharia de Sistemas specified and implemented for MECTRONIX( old Glunz and Jensen, world leader on graphical printing) the computerized system used in the MC205 photographic minilaboratory.

The MC205's system is executed in a standard IBM-PC microcomputer, integrated to the equipment. The microcomputer does the system operations while the direct activation of the motors and sensors reading are done by a micro processed hardware (8031) developed to the project that links with the microcomputer (system).

The following resources were used for the specification:

> Petri networks on the modeling of the equipment's main process.

> syntactic graphs in the definition of the operator's interaction with the interface control.;

> Object Orientated modeling to modularize the equipment and define specific behavior and data of each module and the interactions between then.

The system implementation was done in C++ language, because of the requisition of interaction with the micro processed hardware, processing complexity and expected performance for the system.