Unit 2 computer science and internet technology 1 ESO

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 They are computer systems.
 The system that collects data (input data), processes
it and transmits it (output data).
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 Copy the following sentences in the order that you
do them:
a) I save the photo in My Photos.
b) I print the photo.
c) I copy the photo from my digital camera.
 Match the previous sentences with the stages
output, input, To process

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 It’s a set of knowledge and techniques to
automatically process information and data with a
device. Examples: computer , PDA, Smartphone, GPS,
Tablets, eBook, video console, MP5, Smart TV,
Smartwatch, Google glass.
 Data are encoded in binary code (2 digits).
 Bit.- It´s the smallest unit used to represent data or
information. 1 and Ø
 Multiples of data
 Byte.- 8 bits
 Kilobyte.-1024 b
 Megabyte.-1024 Kb
 Gigabyte.-1024 Mb
 Terabyte 1024 GB

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 Hardware: The physical components of the computer

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Ports
Connector
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Motherboard

8.  Programs that process data.
 Operating system: It’s a set of instructions (programs)
that start up a computer and enables hardware to
work. It permits communications between any program
and hardware. F.i. Displaying characters on the
monitor, printing information
 It’s impossible that a computer can run without OS so it’s the
first software that you must install.
 Windows, LINUX, Mac OS, android
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9.  Programs that process data.
 Other programs
 Games, APPS, programs to process images, video, sound,
storage of data, multimedia applications: word, excel, tools
for drawing.
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10.  Link 1.
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11.  Drives:
 Where the
information is
stored
 Hard disk,
USB, DVD,
memory card
 Folders:
 Contain and
organize files
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12.  Files:
 Data are stored in that way
 You can recognize a file by its:
 Name + extension (3 o 4 characters).
 Icon.
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13.  Exercise 1
 Exercise 2
 Exercise 3
 Exercise 4
 Exercise 5
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14.  It’s an array of computers connected together
that can share data and hardware (printers).
 Elements of a network:
 Computers (host, server and client) with a network
interface card.
 Router, Hub, switches.
 Programs to transmit information. Protocol TCP/IP
 Transmission means: wires that connect computers or
wireless.
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16.  Interconnected networks (e.g. Internet)
 It’s two or more networks connected.
 Internet (World Wide Web). It’s a network of networks
where every single network works independently and uses
the same protocol (TCP/IP). 192.145.12.3
 Each computer connected to Internet is identified its own IP
web address. Moreover another way of identify a computer
is domain name e.g. http://www.jesuitinasvalladolid.com/
 Internet access
 To access the internet you need an internet provider.
Movistar, orange, etc are providers of internet access.
 There are several ways to access to internet:
 ADSL
 Cable
 Satellite Internet
 Smartphone mobile phone
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19.  Web pages
 Web pages are hypertext documents (text, links,
images, multimedia). Name + extension (htm, html).
 You can edit them with specific software such as
FrontPage, dreamweaver, Joomla, word or directly on
the website.
 Web pages are identifies by URL address.
http://www.jesuitinasvalladolid.com
 Browsers
 If you want to open a web page you must install a
browser.
 Internet explorers, Mozilla Firefox, Google chrome,
Opera, Safari are examples of browsers.
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20.  Search engines
 These are web pages that you can find information with.
Google, Bing, Yahoo are examples.
 Portals
 These are web pages that offer different resources:
 News
 Links to other web sites
 Search engines
 Multimedia information
 Chats
 Documents
 Shopping
 Email
 to send and receive messages. Today is used to identify
people
 Social networks. Virtual communities. Facebook
 Group of people who have a relationship in a virtual space
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21.  Blogs
 Web pages that are updated almost every day
 Forums
 People can exchange opinions and information
 Chats (IRC).
 Several people that communicate at the same time. Only
text
 Instant messaging.
 Two people. For instance Messenger
 Videoconferences. Skype.
 Communication with sound and video
 VoIP. IP telephony. Phone over internet
 P2P (Peer to peer) networks. Emule, torrent
 Programs that interchange a big amount of data (video,
music)
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22.  Thinking skill 1. Mapping mind
 Thinking skill 2. Next slide
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