CLASS 4

Introduction to Computers

Let’s review - work together

1. What does GUI mean? Name 5 GUIs.

2. What does URL mean? Protocol? Top level domain?

3. Name four phases of a meme. Now name four memes.

4. What do these acronyms mean?

BZ - H&K- IM2BZ2P - IRL - meh5. What do each of the following Google modifiers mean?

6. What word can you type into Google to help you:a. find the time in New York City

b. see definitions of the word “integrated”.

c. find out how many yards are in a kilometer

d. calculate the square root of 1024

“ ” -~OR

More Review

Answer these questions. Work together.1. “I WANTS 2 STUDY ENGLISH” is an example of what?2. What numbering system do humans use to count?

3. What numbering system do computers use to count? 4. .jpg, .html, .doc, are examples of what?

5. What’s a scrollbar? Desktop? Submenu? System tray?6. What are your 3 favorite chat acronyms?7. What are each of the following websites used for?

a. theurbandictionary.com b. speaklolcat.comc. tealit.com d. knowyourmeme.com

More Review

Answer these questions. Work together.1. “I WANTS 2 STUDY ENGLISH” is an example of lolspeak

2. Humans use a decimal, or base ten system. 3. Computers use a binary system. 4. .jpg, .html, .doc, are examples of file extensions.

5. What’s a scrollbar? Desktop? Submenu? System tray?6. What are your 3 favorite chat acronyms?7. What are each of the following websites used for?

a. theurbandictionary.com b. speaklolcat.com

c. tealit.com d. knowyourmeme.com

Work together.

Write down the instructions on the right. You and your group have ten minutes to complete each of the following searches.

When you are finished, write down the search terms you used to get your results.

1) Current time in London. ________________________________

2) Results specifically mentioning the deep blue sea. ________________________________

3) 123456 in binary. ________________________________

4) Results for different variations of tennis shoes ________________________________

5) Results for women named Hillary who are not Hillary Clinton. ________________________________

6) Definition of the word circuit. ________________________________

7) 5 * 8 + 83 - 16 / 2 = ? _______________________________

Work together.

Write down the instructions on the right. You and your group have ten minutes to complete each of the following searches.

When you are finished, write down the search terms you used to get your results.

1) Current time in London. time london

2) Results specifically mentioning the deep blue sea. “the deep blue sea”

3) 123456 in binary. 123456 in binary (123 456 = 0b11110001001000000)

4) Results for different variations of tennis shoes ~tennis shoes

5) Results for women named Hillary who are not Hillary Clinton. Hillary -Clinton

6) Definition of the word circuit. definition circuit

7) 5 * 8 + 83 - 16 / 2 = ? 5 * 8 + 83 - 16 / 2 (115)

THE NUMBER OF TRANSISTORS USING THE SAME AREA ON A

CHIP DOUBLES EVERY 18-24 MONTHS

Moore’s Law

Who is this guy?

Gordon Moore is the co-founder of Intel - they make computer chips. A lot of computer chips.

Back in 1965 he estimated that the number of integrated circuits (switches) that could be put on a computer chip would double about every two years.

Grandpa Moore

Bytes and bits

With chips betting smaller and smaller, the amount of information they can store increases

BInary digiT = BIT8 bits make a Byte:

0 = 000000001 = 000000012 = 00000010...254 = 11111110255 = 11111111

You can count up to 256 this way (you count the zero)

Byteskilobytesmegabyteswhatabytes?

When you start talking about lots of bytes, you get into prefixes like kilo, mega and giga:kilobyte = KB = 2^10 = 1,024 bitsmegabyte = MB = 2^20 = 1,048,576 bitsgigabyte = GB = 2^30 = 1,073,741,824 bitsterabyte = TB = 2^40 = 1,099,511,627,776 bitspetabyte = PB = 2^50 = 1,125,899,906,842,624 bits

That’s a lot of big numbers. Most people just remember: Kilo = thousand 1,000Mega = million 1,000,000Giga = billion 1,000,000,000Tera = trillion 1,000,000,000,000Peta = quadrillion 1,000,000,000,000,000(Peta is also the old greek word for “monster”)

The word “Google” comes from “googol” 1 with 100 zeros:

10,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000

Evolution of storage

source: http://www.english4it.com/reading/44

Because so much data can be kept in such a small space, storage devices and computers have gotten better, faster and cheaper.

Here are some examples:

The software that powers the space shuttle runs on a single MB of RAM (memory). The minimum RAM requirement for Windows 7 is 1 GB ( 1,000 MB).

Evolution of storage

partial source:

http://www.english4it.com/reading/44

 The CPU (Central Processing Unit - the brain) of Apple's iPhone 4 is more powerful than a supercomputer costing millions of dollars in the 1970s

A floppy disk in the 1970s held 90 KB of data. The current highest capacity flash drive on the market holds 256 GB (almost 3,000,000 of those disks)

What you should remember

The computer and electronic equipment that seems so cool right now will probably seem old and silly by the time you graduate.

Computers can save twice as much data and run twice as fast approximately every two years.

A byte “B” is eight bits, “b”. The prefixes:

Kilo = thousand 1,000

Mega = million 1,000,000Giga = billion 1,000,000,000Tera = trillion 1,000,000,000,000Peta = quadrillion 1,000,000,000,000,000

KB = kilobyte MB = megabyte GB = gigabyte

TB = terabyte PB = petabyte

Sound Effects

What is sound?

Sound is a vibration (振動 )or wave of molecules caused by the motion of an object.

Sound is produced when an object moves or vibrates. Without movement there could be no sound. When an object moves or vibrates, the molecules around the object also vibrate.

How fast does sound travel?

• It depends.

• At sea level the speed of sound is about 344.4 meters per second.

• Water conducts sound faster than air – in fresh water, sound travels at about 1497 meters per second at 25 °C.

• Because sound is the vibration of molecules, there is no sound in space. So if you yell on the moon, no sound will come out.

Age differences

Not everyone can hear the same noises.Your ability to hear certain sounds gets worse

as you get older.Listen to this: http://www.youtube.com/watch?

v=IrewnzQYrPI

Sound Effects

• Sound effects are really important in TV, radio, and movies. They help us understand what is happening, and give us clues about what is happening.

• Sound effects are used so often that we usually don’t even notice them.

• To add the sound effects into shows and movies, a special sound engineer called a Foley artist is needed.

Foley artists

Nearly all the sounds you hear in movies were

not recorded during filming.

For example, if you see a scene of someone walking through the snow, the sound of walking through snow is recorded later and added to the movie – this is done by a Foley artist.

youtube: http://www.youtube.com/watch?v=UNvKhe2npMM

The most famous sound effect in history

• First used in a movie in 1951. • The sound was recorded and added

to the movie later.• It was then reused in a movie in 1953,

where it got its name.• In the 1970s, two film students noticed this

sound being used over and over again.• Later, they worked in movies, and put it

into films they were working on – mostly as a joke for their friends.

Whilhelm examples

• The first movie it was used in.• http://www.youtube.com/watch?v=dc5F2C0CYlA

• The second movie, where it got its name.• http://www.youtube.com/watch?v=cdbYsoEasio

• Many examples• http://www.youtube.com/watch?

v=4YDpuA90KEY&feature=related

• A video history• http://www.youtube.com/watch?v=_PxALy22utc

Are you ready to join Twitter?

Go to www.twitter.com Click on ‘English’ at the bottom of the page1

Full Name allows people to find you on Twitter Username is what appears each time you Tweet - It will be your

Twitter identity! Enter a Password you’ll remember easily Enter your Email address

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You’ll receive a Confirmation Email from Twitter Go to your email account (the one you stated in the previous step) Follow the link in the email to confirm your account. Write your twitter username on the board so others know how to look

for you. Go back to Twitter, search for “lesdavyteacher” and follow me. Follow each other! Your assignment is to follow at least 10 of your

classmates. You are each required to make at least 2 posts by next week. Tell us:

Something you really like Something you really dislike Anything else you want to talk about

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5 • Spice up your Twitter Profile!• Click on Settings on the top right corner of the page• Click on the Profile tab• Upload your picture - No one wants to talk to a faceless person!• Write a few lines about yourself

You are ready to start Tweeting!