The Pennsylvania Liquor Control Board could owe money to many customers. The state said a computer glitch caused the agency to double-charge credit cards used in about 55,000 in-store purchases.

How to Control a Stepper Motor Using a Computer. Stepper motors produce accurate, computer-controlled motion for applications such as robotic arms and paper-feed mechanisms for printers.

As the leading OEM manufacturer of laser scan systems and control electronics, SCANLAB GmbH is extending its product counterfeit protection to include control boards. Here, the company employs modern ...