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2014.09.10.'
1'
IT Basics This is where it all begins…
My favourite book as a child...
Let’s see!
What’s happening here? What’s happening here?
What’s happening here? What do people do all day?
They’re expressing thoughts, emotions, needs, curiosity, etc.
People communicate.
How?
They’re using language and gestures.
2014.09.10.'
2'
What is language? What are gestures?
Language and gestures are
CODE
What is Code, then?
Code is a system of SIGNS that
people agreed upon.
But what are signs?!?
Signs are the carriers of
information.
Information always has some
meaning.
An everyday example…
Another example… :o
What can you do with information?
1. You can create information.
2. You can record information.
3. You can access information.
4. You can process information.
5. You can store information.
6. You can transfer information.
7. You can use information.
2014.09.10.'
3'
Read this! Information Technology:
Past & Present
Analogue
DIGITAL
Analogue means:
Similarity
Analogue information is similar to the original.
Digital means:
Numeric
Digital information is expressed by numbers.
2014.09.10.'
4'
Analogue vs. Digital Analogue vs. Digital
IT today:
" Information Technology today is digital.
" Information is coded by numbers.
" A computer is a digital device.
" Everything is a number to a computer.