德美教育集团Technological advancements over the last century have meant many of us now own multiple computers - desktops and laptops, mobile phones, tablets. The modern personal computer as we know it is only a recent invention. Scroll down to see how this technology has evolved over the past 70 years. Computing pre1950s FIRST ELECTRONIC COMPUTERSVery few electronic computers were available before 1950. This震撼大气科技感企业宣传横版视频，由易企秀公司(eqxiu.com)提供的在线设计平台制作，让您轻松快速地打造专业级的企业宣传视频。易企秀丰富的模板库，让您的创意无限放大，无需专业知识，即可制作出令人瞩目的视觉效果。