In the last programme of the series, Fred Harris talks to  John Coll about the meaning of 'benchmarks', and contrasts the performance of the Commodore Amiga with the Atari 520ST. American reporter Freff explains why the computers of the future will have to be capable of doing many things at once.  Ian McNaught-Davis looks at the British 'Transputer'.  And Lesley Judd tries to fool a system that remembers and recognises faces.