Korean chipmakers Samsung Electronics and SK hynix are pouring more resources into producing chips for self-driving cars amid their slowing sales in key sectors such as PCs. SK hynix, the second-largest memory chipmaker next to Samsung, said on July 26 that its car business now makes more than 10 percent of DRAM sales. DRAM chips are used for temporary data storage. “We are also producing chips for ADAS (advanced driver assistance systems) and self-driving cars since 2015,” the company said in a conference call. “We will continue to focus resources into the futuristic technologies.”