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.