Milford. O.— Computer Technology Corporation (CTC) announced Feb. 27 that its stock has been purchased by Parker Hannifin Corp. (Cleveland, O.) for an undisclosed sum. Albert Vierling, CTC's founder and president, stated that, "Parker's commitment to technology, quality, and worldwide service aligns perfectly with our goals of providing customers with leading edge solutions for both MMI and control." A leading human-machine interface manufacturer, CTC will be an operating division of Parker's $550 million worldwide Automation Group, and will continue to operate from its current location. No personnel changes are planned. John Oelslager, president of Parker's Automation Group, adds that, "The CTC acquisition will give Parker a man-to-machine interface line of both hardware and software products that will take us to the next level in the motion control industry."