The ATOM Synthesiser turns the ATOM into a programmable synthesiser, using the keyboard as a piano keyboard, with the ability to record, and edit four separate tunes, and play them through the internal speaker. As well as altering the tempo, the notes can be played in four different voices which can be selected at any point in a tune. While a tune is being recorded, played or edited, the notes are displayed on musical staves. Commands: Manual, Record, Play, Edit, Tempo,

ATOM Synthesiser comes complete with some demonstration tunes on cassette, including Variations on Bach's Toccata and Fugue, and "The Teddy-Bear's Picnic". Program 5K, graphics 6K.