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"You think you've got your own computer all to yourself and you can't tell the difference that you're working on something other than a computer and sharing this other resource and doing it at a much lower cost than having your own PC."
VOA: special.2010.04.12
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So if you've ever done something bad like drop your laptop or smack your computer and you've never been told not to do this.
如果你以前做过类似的摔或拍打电脑,并且没有人告诉你不可以这样做。
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Well, the infinity mechanism, and many of you will be familiar with this from mathematics or computer science, is recursion.
这种无限机制是递归的,你们许多人会在数学与计算机科学中,熟悉这个词
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And the robot or the computer or what have you is just automatically, mechanically following the code commands of the program.
那些机器人,或叫做计算机等等,只是自动地,机械地执行程序的命令代码
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And so this, in fact, when you say your computer stores information as zeros and ones, A you've just typed the capital letter A, that's all that's going on inside.
事实上，当你说电脑以这些0与1进行信息存储时，你已经键入了大写字母，那就是在计算机内部发生的过程。
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We're going to try and help you learn how to think like a computer scientist, and we're going to begin talking about that towards the end of this lecture and of course throughout the rest of the lectures that carry on.
我们会试着帮你们学会,怎样像一个计算机科学家一样思考，这个内容,会在课程末尾提及,当然也会,贯穿中间的课时。
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Jin says he is a sophomore in computer science and he has science fiction in mind and plus machines So you have some immersion in philosophy.
杰，他大二，学计算机科学,他满脑子都是科幻小说和机器,所以你对哲学有点了解。
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What the clicker is is a little device that will allow you to enter responses to questions that will then get entered into my computer and we can show immediate poll results from the class.
表决器是一种小型设备,你可以通过它回答问题,这些答案会传进我的电脑,我们就可以迅速地得到投票结果
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So what is shown here is the potential solution to potentially read out neural signals dragged from the brain and use these signals after some interpretations or decrypting if you will to drive prosthetic arms or computer cursors on the screen.
大家现在看到的是一种可能的解决方案,有助于解读病人大脑发出的神经信号,同时在经过翻译或者解码之后,使用这些信号，驱动假臂,或者电脑屏上的光标。
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You cannot just tell the computer to enhance that or can you clean that up and then magically use zoom in not only on the image but also on the reflection of the victim in someone's eyeball.
你不能直接要求计算机增强,这张图片或者修复它,然后期待计算机很神奇地放大图片,以及死者的眼珠的反光。
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So with the problems, that is where you really will get your hands dirty and truly immerse yourself in this world of computer science and programming.
带着这些问题，你就能深入研究,这真的可以使你沉浸到计算机科学,和编程世界中。
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For all I could tell, people did equally well but this experiment has been done tens of thousands of times and you could do it yourself on a computer screen.
据我所听到的，两次都差不多,但这个实验做过几十万次,你们可以在电脑上做。
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But in fact, it is not. And so, something I find myself repeating over and over again to myself, to my graduate students, is when you get an answer from the computer, always ask yourself, why do I believe it?
但是实际上，它并不是，因此，我一直一遍又一遍的重复的,给我自己和你们这些学生的就是,当计算机给出一个答案后，一定要问问自己为什么要相信这个答案？
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But whatever your reason for being here this is in fact our introduction to Computer Science; and contrary to what you might have heard or seen or perceived in high school, odds are computer science is not quite what you imagined it to be.
但是不管你们来这儿的原因是什么,这门课介绍的都是计算机科学,可能与你们平时听到的看到的,或者在高中时所想象的恰好相反,计算机技术的优势完全不是你想象的那样。
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But at the end of the day, and here's why we just went with binary and not decimal years ago, when you have one implement a computer with a physical device, it's actually really easy to represent the notion of on or off.
但是最终，之前我们采用二进制,而不是十进制，主要是因为当我们用一台实体机器运行计算机时，这实际上很容易用开或者关的概念来表示。
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And you can't... If the brain was wired up like a personal computer, it would take you four hours to recognize a face, but in fact, we could do things extremely quickly.
你无法,如果大脑是像个人电脑那样组装起来的话,那你识别出一张面孔就得花上四个小时,但事实上,我们能够非常迅速地完成某些事情
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What you might do, for instance, is be sitting at a computer screen and you'll be given incomplete words to fill out "hos-" like "hos-" and you have to fill out this word.
例如，你可以，坐在一个电脑显示器前,你要补充一连串不完整的单词,例如补充完整。
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If you have a computer that plays chess and you want to explain how the computer plays chess, it's impossible to do so without talking about the programs and mechanisms inside the computer.
如果你有一台能下国际象棋的计算机,你想要解释计算机是如何下国际象棋的，如果你不谈程序以及计算机的内部结构,那你就不能对它如何下国际象棋,给出解释。
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If you're in this state, you will necessarily, given the laws of physics and the way the computer's programmed and built and so forth, these wires will turn on, turn off, these circuits will turn on, turn off, boom, suddenly you'll be in that state.
如果你站在这个角度,你必定会考虑,在物理定律和电脑编程原理,如何构造的等等确定的情况下,这些电线通或断,这些回路通或断,嘣,突然你就处在那个位置上
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RAM You probably know your computer has something called RAM which is where documents and programs live just temporarily while you're running them 'cause RAM tends to be pretty fast and whereas your hard disk is where programs and files live permanently.
也许你知道电脑有一个,正在使用的程序和文件都暂时存放在那里,而且会加快电脑速度,而硬盘是程序和文件,永久存储的地方。
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When the program is on your computer you say dot slash and this means on my computer.
当程序位于你的电脑上时，敲入,就意味着在我的电脑上运行。
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So in your mind, if you are now the computer program and you are executing this thing from top to bottom, what just has happened verbally is we are stepping into the line of code that says sort left half of elements.
在你们看来，如果你现在是计算机程序,正在从上到下执行一系列指令，刚才所发生的就是我们现在已执行到了这行代码,它告诉你要对左半部分的元素排序。
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And that's when things really get interesting and so this just hints at the types of thinking that one can derive from the field of computer science and apply either to the field itself of computer science, or whatever domain it is that you are here too study.
这样就开始有意思起来了,这仅仅是我们从计算机科学领域,获得的一些思维方式上的启示,这种思维方式不仅适用于计算机科学本身，也同样可以应用在其他的学习领域。
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Now hopefully you're keeping a sheet of paper with you and you're writing down what you eat so you don't forget everything, and then you sit down at your computer at the end of the day and you log it all in.
希望你们可以随时带张纸,以便随时记下,吃的东西以防忘记,然后坐在电脑前,在一天结束时输入电脑
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in the context of a web page. And increasingly that is where the human computer interaction is, and so will you be empowered by terms and not to just to make a website per se but to make an application, something that's of interest to you, something that solves problems, something that lets you tell someone through the most electronic means possible that you saw them somewhere on campus.
以网页内容的形式表现出来,人机交互的运用将越来越多，而且你将学会编程,不仅能制作网站，还能做出应用程序，一些你感兴趣的东西，一些解决问题的手段，还有一些可以让你通过使用,现有的电子手段来分辨出,校园里面看到的一个人的东西。
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One is called the twenty-four hour recall and that's either done by a computer, or done by a trained interviewer who would sit down with you and say, 'Let's reconstruct everything you've eaten in the last twenty-four hours.' And so then you have to recollect everything you ate in the last twenty-four hours.
其中之一被称为24小时回顾法,可由计算机完成,也可以由专业测试人员,坐在你面前并对你说,"让我们记录所有,最近24小时你所吃的东西",然后你需要回忆,最近24小时内吃了什么
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If unfamiliar, these are the mechanical computer devices that you have to use to buy a ticket on the T these days and there was one of these really awkward but touching situations where it was clear that this woman had no idea, you know, what to do, how to get from here to here, and I could see her just staring at the turnstiles that you're supposed to go through to get into the subway.
如果不熟悉，这是机械计算机设备,当今你必须使用它们来买地铁票,它们实在是难操作的,这个令人同情的情况是,明显这位老太太不知道怎样操作，怎样从这一步到那一步,我看见她只是凝视着,地铁的栅门口。
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It turns out that in a lot of languages, C included, you the programmer knowing a bit about how the computer works and the language works, can exercise more fine-grained control.
结果在包括C语言的很多语言当中，你作为一个程序员懂得了一些计算机的工作方式,和语言的处理方式，可以更精确地控制运用它。
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This is convention, so on almost-- and most any computer you overuse, if you're writing code that uses a char, you're gonna be handed 8 bits or 1 byte to store that particular char.
这是约定，对于大多数-,电脑，当你写代码要用到一个char型数据时,必须先预留8比特或1字节,的空间来存储这个char型数据。
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So now, in this case, this code is going to, when we get here, check, and if you haven't seen that strange thing there, that exclamation point in bang computer-ese called a bang, it says x if ANS star ANS is not equal to x, all right?
那么现在，在这个例子中，当我们执行到这里，代码会去检查,如果你没有看到过这个奇怪的东西,这个感叹号在计算机学中被叫做,代码的意思是如果ANS的平方不等于？
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