Aaron is a software program written by artist Harold Cohen that creates original artistic images. Initial
versions of Aaron created abstract drawings that grew more complex through the 1970s. More
representational imagery was added in the 1980s; first rocks, then plants, then people. In the 1990s more
representational figures set in interior scenes were added, along with colour. Aaron returned to more
abstract imagery, this time in colour, in the early 2000s. Aaron initially drew in black and white using a
succession of custom-built "turtle" and flatbed plotter devices. Cohen would sometimes colour these images
by hand in fabric dye (Procion), or scale them up to make larger paintings and murals. In the 1990s Cohen
built a series of painting machines to output Aaron's images in ink and fabric dye. He now uses a large-
scale inkjet printer. Development of Aaron began in the C programming language then switched to Lisp in
the early 1990s. Cohen credits Lisp with helping him solve the challenges he faced in adding colour
capabilities to Aaron. The first robot in human history to paint original art. Aaron mixes its own paints, creates striking artwork and even washes its own brushes - uses a range of fabric dyes, Procion.
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