Microsoft’s Windows 8 platform hasn’t exactly been the catalyst PC makers were looking for as sales continue to slide, but the new operating system does seem to be making some progress. IHS-owned market research firm Displaybank says that of the 46 million notebook computers that shipped during the first quarter this year, 4.57 million of them included touchscreens, Digitimes reported. That figure is good for a 10% share of the global market and is up a healthy 51.8% from the fourth quarter last year. Displaybank is impressed by touchscreen laptops’ relatively quick penetration considering how young the market is, but it remains to be seen whether or not Microsoft’s new platform and the touchscreens that come along with it will help struggling PC makers rebound.