Cohen first became involved with computer drawing in 1968, shortly after moving from London to Southern California to take up a one-year professorship at the University of California, San Diego. The following year the professorship was made permanent. In California, Cohen began to investigate the use of computers as a creative tool. Between 1973 and 1975 Cohen worked at the Artificial Intelligence Laboratory of Stanford University, Connecticut, where he began to 'write programs which would, in some important respects, do what human artists do when they make images'. The black ink outlines of the abstract shapes of 'Untitled Computer Drawing' were created automatically by a computer using one such programme. The forms were then hand-coloured.