A pioneering computer artist, Mohr owned his own PDP11 computer well before most writers had their word processors. Trained in fine art, married to a mathematician, he began as a concrete (rather than mystical) Constructivist committed to rational structures in blackand-white art. His Book-Art Book, Artificiata I (1968), contains a succession of geometric shapes on a continuous field of horizontal lines, broaching narrative in the transitions from page to page.
Soon afterwards, Mohr began to use the...