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presis/revealjs/information-technology/1-history.md

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2018-11-03 23:22:50 +01:00
background-image="img/apple2e.jpg"
<h1 style="transform: translateX(-140px) translateY(-125px);">History</h1>
<notes>
* Simon
* large topic
* to save time: only Internet (de facto the modern IT)
* development of concepts needed for todays products and companies
</note>
---
background-image="img/mainframe.svg"
<h2 style="transform: translateY(-200px);">ARPAnet</h2>
<notes>
* ARPA: Advanced Research Projects Agency
* goal: optimize efficiency by sharing computers
* (Mainframes only used by 1 person simultaneously)
* 1969: First use; end of year: only 4 computers
* next years: + institutions in Hawaii, London, Norway
* Problem: difficult to manage large amounts of nodes in one network
</notes>
---
background-image="img/packet-switching.svg" background-color="#ffffff"
2018-11-03 23:22:50 +01:00
## Packet switching
<notes>
* helps avioding congenstions
* split data at transmission
* join it back when receiving
* think of it as:
* cutting photo in half, putting in 2 envelopes
* recipient glues them back together
</notes>
---
background-image="img/tcpip.svg" background-color="#ffffff"
2018-11-03 23:22:50 +01:00
## TCP/IP
<notes>
* Vinton Cerf
* TCP (transmission control protocol)/IP (internet protocol) stack
* allowed data transfer and communication between over 4B nodes in network
</notes>
---
background-image="img/email.jpg"
## SMTP
<notes>
* one of the first applications
* base for e-mail transfer (still in use today)
* most traffic back then
</notes>
---
background-image="img/www.svg" background-color="#ffffff"
2018-11-03 23:22:50 +01:00
<h2 style="transform: translateY(-340px);">World Wide Web</h2>
<notes>
* historically more important; by Tim-Berners-Lee (1991; CERN)
* developed HTML, HTTP and concept of URLs (all still in use today)
* first web browser
</notes>
---
background-image="img/money.svg"
## Commercialization
<notes>
* development of Mosaic
* rising popularity of AOL
* enabled users to browser the internet from home via telephone line
* search engines, shops, early social networks
* → fully suitable for end users
</notes>