Communication Flashcards
List some forms of communication.
Radio
Cell phone
Talking
Morse code
Email
Social media (Facebook , twitter)
What was the post stone?
European sailors in Cape Town would leave letters on Robben island under a special stone. When a ship passed by, those sailers would take the letters back to Europe.
What was the mail coach?
It was the only way to send a letter in land between Cape Town and farms (as far as swellendam).
What was the first typewriter called?
Writing piano
Why was the QWERTY keyboard developed?
Because the previous keyboard (on the writing piano) got jammed.
The QWERTY keyboard separates the keys that are often used together.
Describe how a typewriter works.
When you press a key, the little stamp went into ink and then hit the paper
Why is a QWERTY keyboard called a QWERTY keyboard?
Because the first six letters in the top left spell QWERTY
What is a Telegraph?
A machine that is used to send messages using a language called Morse code.
What is Morse code?
A language that uses dots and dashes (short signals and long signals) to make letters of the aphabet
List the similarities and differences between a computer and a typewriter.
Computer:
Press a button to go to next line
Doesn’t use paper
Doesn’t get jammed
Electronic
Can delete
Typewriter:
Uses paper and ink
Gets jammed
Can’t change what you wrote after you typed
Similarities:
Both use the QWERTY keyboard
When was the first telephone invented? By whom?
1876
Alexander Graham Bell
Describe the development of postal system over time?
People use pen and paper to write letters and they would deliver them themselves /get a messenger to take their letter.
In the 1800s, official postal systems set up all over the world (so you could easily send a letter or parcel anywhere).
Post stone was used to send letters internationally (ships)
These days, we use stamps and mail boxes and letters go via airplanes)
Nowadays people also use courier services to send mail and packages.
We use email to send letters.
What are the disadvantages of the postal system?
Can be unreliable because sometimes letters get lost and never arrive.
It can take a very long time for letters to reach their destination.
Describe the structure of a history paragraph.
Topic sentence first (main idea)
Supporting sentences next (first give evidence then explains)
Concluding sentence last
What is the difference between a modern typewriter keyboard and QWERTY keyboard?
Writing piano has letters in alphabetical order where as QWERTY has letters commonly used together split up from each other
Why did the writing piano jam?
The alphabetical order of the keys and a person typing too quickly.
How does a telephone communicate sounds?
Along electrical wires
Who else invented the telephone at the same time as Alexander Graham Bell?
Elisha Gary
(Came to register his invention a few hours after Alexander Graham bell)
Who invented the telegraph?
Samuel Morse
How do you send a telegraph?
Type in dots and dashes for your message
How do receive a telegraph?
Translate the dots and dashes back into the normal alphabet.
When was the radio invented invented?
1895
Who in invented the first radio?
An Italian teenager called Guglielmo Marconi
How does a radio work?
It sends radio waves through the air
Why was a radio called a wireless?
It didn’t use wires, it received radio waves sent through the air
What did people listen to on the radio in the 1920s?
News, music, stories, sports, drama and variety shows
How have radios stayed the same over time?
Still use radio waves,
Still broadcast news and music and sports
What about radios has changed over time?
They look different
Changed from analogue to digital
Can even listen to radio on a cell phone
When was the Kodak film company founded?
1888
Who invented the Kodak camera?
George Eastman
Describe how cameras have changed over time.
First camera: big, heavy and not easy to carry. People had to go to a studio photographer. Photos were difficult to develop. Had to be developed quickly in a dark room.
The first handheld cameras: still difficult to use
In the late 1880s the Kodak camera was invented. It was a small box camera that used a roll of film. Could only see the photo after you’ve used the whole roll of film and developed it.
Digital cameras in the 1960s. Now days you can check the photos immediately
When was the cellphone invented?
1973
Who invented the cellphone?
Martin Cooper
What is the difference between original cell phones and today’s cellphones
Size: original was much bigger
Functionality: old ones could do a lot less (only make calls on original ones; modern ones can send messages, take photos, video calls, browse internet)
Originally was heavier
Why was the invention of the cell phone significant?
You could walk around anywhere making phone calls
How have cellphones changed our daily lives?
COMMUNICATION
* easier to stay in touch with people wherever we are
* makes the world feel smaller
WORK
* revolutionized how we work with
1. email on the go
2. calendar apps
3. productivity tools
* improved how well people work
* enabled flexible working arrangements
INFORMATION ACCESS
* Cellphones are like pocket sized libraries
* we can access any info at any time
* can read news, browse internet, learn new skills anywhere any time
* they have democratized information
When did the first television stations begin?
1930s
When did South Africa first get TV?
1976
Describe the development of TV through time.
First: Box, round screen, only black and white.
Then showed color, still box shape.
Then flat screen.
Then smart.
Describe the earliest computers.
Filled a whole room.
Difficult to use.
Only companies, universities and governments used them
What was the computer revolution?
When computers were made smaller and easier to use so that anyone could buy one to have/use in their home/school/work.
New smaller computers were called pc (personal computers)
Who was one of the best known people involved in the computer revolution?
Bill Gates
What company did Bill Gates found?
Microsoft
Describe the developments of the computer in the 21st century
Laptops.
And cloud computing which allows you to store and access data from anywhere with an internet connection.
Who invented the World Wide Web?
Bill Joy
When was the internet first developed?
1960s
(Computer researchers set up networks to share info and resources)
When was the World Wide Web invented?
1994
When did dot-com companies and online services become popular?
Late 1990s and early 2000s.
What new technologies were developed in the late 1990s and early 2000s.
Search engines
Online advertising
e-commerce
List three forms of social media
You tube
Face book
X (used to be Twitter)
How has the internet changed our lives?
- Made it easier and quicker to find information.
- Made it easier to communicate with people
