Michael Angiulo demonstrates the new Microsoft Surface tablet during a news conference in Los Angeles

Michael Angiulo, corporate vice president of Windows Planning, Hardware and PC Ecosystem at Microsoft Corp., demonstrates using 'digital ink' with the company's Surface tablet computer during a news conference at Milk Studios in Los Angeles on June 18, 2012. Microsoft unveiled its own Windows-powered tablet computer called Surface, altering its strategy of focusing on software and relying on partners to make the machines in a renewed attempt to take on Apple Inc.'s iPad. UPI/Jim Ruymen