The first computer in the Netherlands was the ARRA I (Auto Relay Calculator Amsterdam). It was built in Amsterdam by the Mathematical Centre, now named CWI. It was a machine which processed with relays, switches operated by solenoids. In practice, the machine was not really useful. During the presentation on June 21, 1952 the machine was shown in the presence of the Amsterdam Mayor d'Ailly and Minister for Education, Arts and Sciences FJ Th. Rutten. The device had been given the assignment to present the a table of random numbers. It did produce it during the demonstration, but then the computer gave up. Its successor, the ARRA II, was a success. The computer contained radio tubes and transistors and core memory. This computer successfully carried out calculations for the Fokker aircraft factory and Delft Hydraulics. The ARRA I nor the ARRA II have been preserved. From 1995 more universities and scientific institutes such as the TU Delft and TNO started to build computers and from 1958 an industry started to spin out from the academic field with the company Electrologica, which was later acquired by Philips.