Name: 1週目 (Week 1)
Uploaded: 2021-01-14T06:22:17.000Z
Duration: 52 min 43 s
Description: VoiceTubeの動画で発音を聞きながら英語表現を覚えよう！学べる英語：

>> -A triumph of mathematical and mechanical skill

is this great new automatic calculator at Harvard University.

Intricate problems in mathematics put through the machine in coded form

on tape are accurately solved in a minute fraction of the time required

Designed to expedite all forms of mathematical and scientific research,

the giant mechanical brain will work for the United States Navy until war's end.

The past was a magical place, but if you've ever

wondered what that device is in Harvard Science Center,

it is indeed part of the Harvard Mark I, and it's

on display there now for the past many years.

And what you'll see embedded in problem set

one is a look behind the scenes at what that device did, and does,

from Professor Harry Lewis, who is in the computer science department here.

>> But today we begin to transition from last week to this,

and we'll bring mention of one photograph here

Does anyone know what this here is on the screen?

DAVID J. MALAN: So it was supposedly the very first actual bug in a computer.

Now in reality the word bug, for a mistake in a program,

has been with us for some time in the physical world,

and this was one of the first documented times where someone actually

plucked a large moth out of the Mark II computer, put it in the binder,

and then recorded it as the first known bug

So thus was entered that into today's lore.

Everything from last week is available online.

In particular resources that you might not necessarily notice, especially

So one of the teaching fellows every year makes a canonical set of notes,

so you needn't keep your head down, trying

to transcribe most anything that might happen here in class.

So realize that those so-called [? Scribd ?] notes

are online, certainly the slides and source code that we use in class.

We make full text transcripts available as well.

So if you vaguely remember some term, and want to look it up a little

more readily, realize that all of that is searchable online.

Indeed, today we begin to look at a lower level programming language,

soon to be known to us as C, and it's very easy

to sort of get lost after just a few moments time, and then sort of wonder

how we actually got to some more complex example from the simplest.

And so realize we'll cherry pick during class some

of the representative examples, but realize that so much more is also

available online so you can work through it at your own pace,

>> But we left off with programs that were just this.

So I click the green flag, and what does this program do?

It makes the cat say hello in his little world

on the top left hand side of Scratch's user interface.

But we started to introduce some terminology last week.

And yet there were other shapes to scratch,

besides these so-called statement, they were also

And in this case, this thing repeats, obviously, 10 times.

And today we're going to see how to translate this to a more modern world,

if you will, even though it's going to appear at first glance

And then we have things like this, which had this shape,

Something that is either true or false, yes or no, one or zero,

But we called those Boolean expressions, and we plug them

And in the world of Scratch, everything nicely

interlocks in terms of its shape, if it makes logical sense to do so,

but you don't have to stop at just doing one thing conditionally,

you can have a proverbial fork in the road

and do either this or that if the condition is true or not.

And then, as you'll see, if you haven't already,

So Scratch grows to fill the shapes that you might want to insert into it,

so you can actually express most any logic that you might want to do.

>> Now a few words of announcement for both here and New Haven.

The URL for this is on the course's website, for those unfamiliar.

Sections will be an opportunity to get together

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1週目 (Week 1)

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