[free]计算机科学速成课-Crash Course Computer Science，一共四十集，
介绍入下：
Hello world, I'm Carrie Anne, and welcome to Crash Course Computer Science!
Hello world！我是 Carrie Anne，欢迎收看计算机科学速成课！
Over the course of this series, we're going to go from bits, bytes, transistors and logic gates,
在这个系列中，我们会学习 Bits(位)，Bytes(字节)，晶体管, 逻辑门，
all the way to Operating Systems, Virtual Reality and Robots!
一直到操作系统，虚拟现实和机器人!
We're going to cover a lot, but just to clear things up
我们要学很多东西，但预先说明
we ARE NOT going to teach you how to program.
我们 *不会* 教你怎么编程
Instead, we're going to explore a range of computing topics as a discipline and a technology.
我们会从高层次上纵览一系列计算机话题
Computers are the lifeblood of today's world.
计算机是当今世界的命脉
If they were to suddenly turn off, all at once,
如果突然关掉所有的计算机
the power grid would shut down, cars would crash, planes would fall,
电网会关闭，车辆会相撞，飞机会坠毁
water treatment plants would stop, stock markets would freeze,
净水厂会关闭，证券市场会停止运作
trucks with food wouldn't know where to deliver, and employees wouldn't get paid.
装满食物的卡车不知运往何方，员工得不到薪水
Even many non-computer objects -like DFTBA shirts and the chair I'm sitting on-
甚至很多和计算机无关的东西，例如 DFTBA 的 T 恤和我现在坐的椅子
are made in factories run by computers.
也都是在计算机管理的工厂中制造的
Computing really has transformed nearly every aspect of our lives.
计算机改变了我们生活中几乎所有方面
And this isn't the first time we've seen this sort of technology-driven global change.
我们也不是第一次遇到推动全球发展的科技了
Advances in manufacturing during the Industrial Revolution
工业革命中生产能力的提高
brought a new scale to human civilization - in agriculture, industry and domestic life.
大幅提升了农业，工业，畜牧业的规模
Mechanization meant superior harvests and more food, mass produced goods,
机械化导致更好的收成，更多的食物，商品可以大批量生产
cheaper and faster travel and communication, and usually a better quality of life.
旅行和通讯变得更便宜更快，生活质量变得更好.
And computing technology is doing the same right now
计算机和工业革命有一样的影响
- from automated farming and medical equipment,
从自动化农业和医疗设备
to global telecommunications and educational opportunities,
到全球通信和教育机会
and new frontiers like Virtual Reality and Self Driving Cars.
还有 虚拟现实 和 无人驾驶汽车 等新领域
We are living in a time likely to be remembered as the Electronic Age.
现在这个时代很可能会被后人总结成 "信息时代"
And with billions of transistors in just your smartphones, computers can seem pretty complicated,
你的智能手机中有数十亿个晶体管，看起来好像很复杂
but really, they're just simple machines
但实际上它是很简单的机器
that perform complex actions through many layers of abstraction.
通过一层层的抽象 来做出复杂操作
So in this series, we're going break down those layers,
在这个系列中，我们会一层层讲解，
and build up from simple 1's and 0's, to logic units, CPUs,
从最底层的1和0，到逻辑门，CPU
operating systems, the entire internet and beyond.
操作系统，整个互联网，以及更多~~
And don't worry, in the same way someone buying t-shirts on a webpage
不用担心，正如在网上买T恤的人 不用知道网站代码是怎么写的
doesn't need to know how that webpage was programmed,
不用担心，正如在网上买T恤的人 不用知道网站代码是怎么写的
or the web designer doesn't need to know how all the packets are routed,
设计师不用知道数据包是怎么传输的
or router engineers don't need to know about transistor logic,
设计路由器的工程师不用理解晶体管的逻辑
this series will build on previous episodes but not be dependent on them.
本系列中每个视频会接着上集继续讲，但并不依赖前面的视频
By the end of this series,
等这个系列结束后
I hope that you can better contextualize computing's role both in your own life and society,
希望你能了解计算机在你的人生 以及社会中扮演什么角色
and how humanity's (arguably) greatest invention is just in its infancy,
以及这个人类史上最伟大的发明（可以这样说啦）是怎么开始的，
with its biggest impacts yet to come.
它对未来还会有更大的影响
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