‘Microelectronics For All’ (or MFA) was developed to introduce systems thinking to 11 –14 year olds. Some 40% of UK secondary schools have purchased MFA since its introduction in 1984. The basic concepts introduced by MFA relate to sensing (with input sensors), acting (with output devices), making ‘decisions’ (with gates), counting, pulsing and using a small memory to control a ‘music module’ and a Lego buggy.