This paper describes the data acquisition and processing system of the Machines and Machine Construction Laboratory of the University of Gent. A system incorporating a minicomputer has been found to give by far most possibilities. Its flexibility, modular design, simplicity in use and computing capacity are particularly appreciated. The installation is fixed in order to have a reliable system. Analog lines for the signals and digital lines for the operators console connect the test rigs to the data logger. The calculation of the static pressure level from dynamic measurements is described as a possible application of the system.