一款软件是如何开发出来的
When you think of software development, you probably think first of a person writing code. In fact, for any important piece of software, there will be many people involved and only some are developers.
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Understanding Computer Science
虚拟的攻击，真实的威胁
Airplanes couldn’t take off. Ships and trucks couldn’t deliver products. Factories stopped running. Hospitals had to turn away patients. It was June 27, 2017, and an invisible enemy was attacking businesses around the world. That enemy was a computer virus. Security experts named it NotPetya because at first it seemed similar to a 2016 virus named Petya. But it was much worse than Petya. “It was the worst cyberattack ever,” says Craig Williams, a cybersecurity expert at Cisco in Austin, Texas.
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互联网进入Web 3.0时代
A teenage girl wanders into her kitchen one morning. The lights come on automatically as she enters the room and her favorite music begins to play, thanks to the Internet of the future. Invisibly, it follows her every move, anticipating what she will want and need. It accesses the smart watch the girl is wearing, gathering data about her current health including body weight, heart rate, bowel movements, and how much she has exercised and slept lately. It combines this data with knowledge about how various foods have affected the health of everyone else using the Internet and smart watches. Then it speaks through the watch with the voice of a friendly virtual assistant, suggesting yogurt with granola, a healthy and enjoyable breakfast.
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