Name: 第0周 (Week 0)
Uploaded: 2021-01-14T05:52:41.000Z
Duration: 47 min 1 s

[MUSIC PLAYING Tritonal, Cash Cash,  "Untouchable"]

[音樂播放Tritonal，現金現金，  “賤民”]

SPEAKER 1: I'm going to France, and you're going, too.

揚聲器1：我要去 法國和你要去了。

DAVID MALAN: This is CS50, Harvard University's introduction

DAVID馬蘭：這是CS50， 哈佛大學的介紹

to the intellectual enterprises of computer science

and the arts of program-- and for the first time in history,

和program--的藝術 對於在歷史上第一次，

Indeed, whether you're here in Cambridge or in New Haven or Miami or St. Louis

事實上，無論你在這裡在劍橋 或在紐黑文和邁阿密或聖路易斯

or Amsterdam or anywhere around the world

或阿姆斯特丹或任何地方 世界各地的

taking CS50, computer science E50, CS50X, CS50 AP,

服用CS50，計算機 科學E50，CS50X，CS50 AP，

>> So I made a mistake myself some time ago when I started off college.

>> 所以，我犯了一個錯誤我自己的一些 很久以前，當我開始上大學。

And I got to college, and I decided to frankly, stick within my comfort zone.

而我上大學，我決定 坦率地說，堅持在自己的安樂窩。

I ended up declaring a concentration, or a major, of government.

最後我聲明濃度， 或重大的政府。

Ant that was mostly a function of me being pretty familiar with government

螞蟻主要是我的函數 是非常熟悉政府

or at least history or I really liked constitutional law in high school.

或者至少是歷史還是我真的很喜歡 憲法在高中。

And so when I got here, I kind of gravitated toward things

因此，當我來到這裡，我種 的趨向了往東西

上帝保佑我在課堂上做的很差。

I certainly wanted to stay within my comfort zone,

and it wasn't until sophomore year that I finally

got up the nerve to step foot in a classroom called CS50.

鼓起勇氣步驟腳 在一個名為CS50教室。

And at that point, did I finally realize that, my God, homework could actually

在這一點上，我才終於明白 是，我的上帝，家庭作業居然可以

>> Indeed, I was one of those kids that on Friday evenings when

>> 事實上，我是那種一個孩子 上週五晚上，當

the P-SETS would be released, I would go back to my room and dive

在P-SETS將被釋放，我 會回到我的房間，潛水

And for me, that was a sign that this was a field for me.

而對於我來說，這是個好兆頭 這是一個場對我來說。

But what was more important was the fact that I did get up this nerve

但更重要的是 事實上，我的確得到了這根神經

to explore waters unfamiliar to me and get beyond my own comfort zone

探索對我不熟悉的水域 並獲得超出了我自己的安樂窩

and frankly, I only was able to do that sophomore year by taking this class

坦率地說，我只能夠做到這一點 大二的時候採取這一類

>> Indeed, it was the very last day that I finally switched over and finally

>> 事實上，這是最後一天， 我終於切換，最後

declared CS as my concentration, putting gov at that point behind me.

聲明CS為我的注意力， 把政府網站在我身後這一點。

And so we're not setting out in this course to turn all of you

所以，我們不設置在 這當然把所有你

into CS majors or concentrators, but rather to give you an opportunity

進入計算機專業或集中，但 而是為了給你一個機會

to hopefully go beyond the world with which you're currently familiar

and bring back from this world skills and knowledge and savvy

而從這個世界帶回 技能和知識和悟性

that you can apply to your own world, whether that's

您可以應用到您的 自己的世界，不管是

in the humanities, social sciences, natural sciences, or beyond.

在人文科學，社會科學， 自然科學，或超越。

>> Indeed, if you're feeling a little intrepid

>> 事實上，如果你 感覺有點勇敢

about being in this room let alone in this class,

關於這個房間是 更何況在這個班，

realize that if history is any indication, 72% of you

認識到，如果歷史 任何跡象表明，你72％

So it is by all means not the case that the student sitting to the left

因此，它是通過各種手段並非如此 該學生坐在左邊

or to the right or in front or behind you knows far more about CS

或向右或前面或 你身後知道遠更多關於CS

And indeed, much of the support structure

that we've set up in this course over the past many years

我們已經在此設立 當然，在過去的許多年

has been for exactly that reason-- to provide an on ramp that still exits

一直正是reason--到 斜坡上仍然退出提供

just as rigorously and just as high as ever--

but the slope of which allow students less comfortable and more comfortable

但它的坡度讓學生 那麼舒服，更舒適

alike to succeed irrespective of his or her prior background.

一樣的成功，不論 他或她事先背景。

>> Indeed, what ultimately matters in this class is not

>> 的確，最終 問題在這個類是不

so much where you end up relative to your classmates

這麼多，你最終會 相對於你的同學

but where you in week 12 end up relative to yourself

但如果你十二週 結束了相對於自己

in week zero, which is where we are here today.

在零週，這是 我們今天在這裡。

>> Indeed and this may very well and probably does look like Greek

>> 事實上，這可能非常好 而且很可能看起來像希臘

But rest assured, that this and so much more

is going to be completely within your grasp in just a little bit of time.

將是完全在你的 把握時間只是一點點。

>> But today, we focus on some of the higher level ideas

>> 但是今天，我們關注一些 的較高級別的想法

to give you a taste of CS50 and computer science

in a sense of what you're signing up for.

在某種意義上是什麼 你報名參加。

And indeed, computer science might be distilled more

事實上，計算機科學 可能更蒸餾

simply as computational thinking-- thinking like a computer, if you will.

簡單地計算thinking-- 思就像一台電腦，如果你願意。

And there's so many different things ingredients that go into that,

而且有這麼多不同的事情 成分進入的，

但是讓我們提出只有三個為今天。

If the goal of the class ultimately is not to teach you programming,

如果類的目標，最終 不是教你編程，

is not to teach you C or PHP or SQL or any number of the words

是不是要教你C或PHP或 SQL或任何數目的字

and acronyms in the course's description,

but rather to teach you to solve problems more effectively

and to think more methodically and more algorithmically, so to speak.

並認為更有條理和 更多的算法，可以這麼說。

讓我們來看看究竟是什麼意思。

>> So I would propose that thinking computationally boils down

你有什麼需要解決的一個問題？

You need to input-- like the input to the problem--

you need an output, which is hopefully the solution,

需要的輸出，這 是有希望的解決方案，

and then you need a process by which to solve that problem, which

然後你需要一個過程， 要解決這個問題，這

we'll call an algorithm-- a set of instructions for solving some problem.

我們會打電話給一個算法 - 一組 說明解決一些問題。

>> But first, let's focus on the first and the last of these inputs and outputs.

>> 但首先，讓我們關注的第一和 最後這些輸入和輸出。

Computers after all, apparently only understands zeros and ones.

計算機畢竟，顯然 只有理解零和一。

Even if you're not familiar at all with what's underneath the hood,

即使你不熟悉的一切 什麼是引擎蓋下，

you probably at least heard that computers understand binary--

你可能至少聽說 計算機能夠理解binary--

just zeros and ones-- but how can you possibly do anything interesting?

只是零和ones--卻怎麼也 你可能做什麼有趣的事？

>> Well, one of the themes of the class is going

字幕列表影片播放

第0周 (Week 0)

familiar

represent

science

problem