Elea 9003 computer in 1959, and later, the Praxis 48 typewriter in 1964 and the Valentine portable typewriter in 1969. In 1954, Mario Tchou joined Olivetti and was in put in charge of a team responsible for creating a commercial computer. In 1957, the team created the Elea 9001. Tchou went on to lead a team of 500 engineers, and decided to include transistors in the Elea 9003. Mario Bellini joined Sottsass at Olivetti in 1963. He designed the Programma 101 (1965), the Divisumma 18 (1973), and the Logos 68 (1973) calculators, and in 1966 the TCV-250 video display terminal. Mario Bellini and Ettore Sottsass, who by then directed design for Olivetti, hired designers such as George Sowden and James Irvine. Sowden worked for Olivetti from 1970 until 1990 and designed the company's first desktop computer, the Olivetti L1, in 1978 (following ergonomic research lasting two years). In 1991, Sowden's design for the Olivetti fax OFX420 won the ADI Compasso d'Oro Award. In 1999 Michele De Lucchi designed the Art Jet 10 inkjet printer, which was also awarded the Compasso d'Oro, and in 2001, the Gioconda calculator. In 1952, the Museum of Modern Art in New York (MoMA) held an exhibit titled "Olivetti: Design in Industry" Another exhibit was mounted by the Musée des Arts Décoratifs in Paris in 1969 and later toured five other cities. Many Olivetti products and archival material related to design are held in museum collections including the MoMA design collection, the Cooper Hewitt in New York, and the Centre Pompidou in Paris. Between 1954 and 2001, Olivetti won 16 Compasso d'Oro awards for design. In May 2022, ADI Design Museum in Milan paid tribute to this achievement with an exhibition titled Podium 16. Olivetti paid attention to more than product design. Graphic design and architectural design was also considered pivotal to the company, which engaged architects and designers such as Gae Aulenti, , BBPR, Egon Eiermann, , Ignazio Gardella, Louis Kahn, Le Corbusier, Carlo Scarpa, Giovanni Pintori, Bob Noorda, and Lella and Massimo Vignelli to design factories, office buildings, showrooms, and publicity materials. Giovanni Pintori was hired by Adriano Olivetti in 1936 to work in the publicity department. Pintori was the creator of the Olivetti logo and many promotional posters used to advertise the company and its products. During his activity as Art Director from 1950, Olivetti's graphic design obtained several international awards, and he