The last column has come to life. It twists and jumps as it inflates and climbs back up in a solitary effort to stand at full extension for only a moment, before it falls again. But as it does, the second pile stirs and rises majestically to full height for a moment before it is joined by the end tube which has once again become active. The tubes are, in fact, an eight-bit binary counter. The tube at the other end, the most significant one, equals one hundred and twenty eight when inflated.
Binary numbers are at the root of digital computers.
Its imagery is fancifully drawn, collaged and rubber-stamped to present the principle of binary counting. The display asks the visitor to determine the decimal equivalent of what the tube express in binary and then to press a button which displays the correct answer.