TAIPEI/SAN FRANCISCO (Reuters) -Taiwanese chip design giant MediaTek is developing an Arm-based personal computer chip that will run Microsoft's Windows operating system, according to three people familiar with the matter. Last month, Microsoft unveiled a new generation of laptops that feature chips designed with Arm Holdings tech which provide enough horsepower to run the artificial intelligence applications executives said were the future of consumer computing. The MediaTek chip is geared toward this effort.