Richard Gomm, almost completely disabled from birth, uses a microcomputer to control equipment around his room, to write philosophy and poetry and to entertain himself. For him it's a lifeline. Ian McNaught-Davis begins a systematic look at how micros are used and at how to use them. Assisted by John Coll he looks at how a simple system can be expanded to do many different things and takes a trip inside the BBC's own microcomputer.