Before revision: All Mindstorms kits consist of a selection of Lego Elements, a "Smart Brick" (internally known as a programmable brick or "pbrick"), a which serves as the "brain" for a Mindstorms machine.
After revision: All Mindstorms kits consist of selection of Lego Elements, a "Smart Brick" (internally known as a programmable brick or "pbrick"), a which serves as the "brain" for a Mindstorms machine.