To help ensure that Seattle remains a center for technology growth, Microsoft today is announcing a $7.2 million donation to the University of Washington for a new computer-science building. It will be the Redmond company's first donation toward a university building and one of its largest single donations ever. Current and former Microsoft employees individually also have donated $4.5 million to the $70 million project. "To Microsoft, it's vital that the UW continues to be an engine for technology innovation and a catalyst for economic development throughout the region," company spokesman Matt Pilla said. "That's what this announcement is about."