Tech luminaries we lost in 2015

In MemoriamImage byIEEE History Center, Reuters/Ralph Orlowski, NASAThe past year, like all years, saw the passing of many notable technologists whose innovations, visions and hard work forever changed our world. Some made their marks quietly, with little fanfare. Others garnered headlines and worldwide attention. And although each left his or her own unique legacy, they all shared a pioneering spirit that brought them to the forefront of their respective disciplines and industries. So as the ca