This Atlas Wheel Balancer uses a newly designed computer board system that makes replacement of the computer board as easy as plug and play. Many of the Asian manufacturers are using computer technology that is over ten years old. All of the Atlas balancers are implementing the newest and most reliable computer technology available. This improved technology is one of the many reasons that Atlas balancers will provide years of reliable service. This is a self-calibrating computer wheel balancer. There is no need to calibrate the balancer each morning when you turn it on.