<Tr> <Td_colspan="2"> 1947, 1948, 1949, 1950, 1951, 1953, 1955, 1956, 1959, 1973, 1974, 1985, 1989 </Td> </Tr> <P> The NC State Wolfpack men's basketball team represents North Carolina State University in NCAA Division I men's basketball competition . The Wolfpack currently competes in the Atlantic Coast Conference, of which it was a founding member . </P> <P> Prior to joining the ACC in 1954, the Wolfpack was a member of the Southern Conference, where they won seven conference championships . As a member of the ACC, the Wolfpack has won ten conference championships, as well as two national championships in 1974 and 1983 . State's unexpected 1983 title was one of the most memorable in NCAA history . </P> <P> Since 1999, the Pack has played most of its home games at PNC Arena, which is also where the NCAA championship trophies are kept . Prior to 1999, they played at Reynolds Coliseum . </P>

When did nc state win the national championship