They had 2 hits in 1967, Arnold Layne (No 20) the See Emily Play (No 6).
They then became an album only band until 1979 when they released "The Wall".
"Another Brick in the Wall" got to No1 and was the last chart topper of the 70s.
Between 1967 and 1979 13 Pink Floyd albums charted, but they would not release singles from them.