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Subido el 1 de noviembre de 2018 por Isabel L.

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Although technology is a lot of things, we can't say that something is technologic in so many fields, 00:00:02
We tend to associate technology with electronic devices such as computers or smartphones and also we connect with the internet. 00:00:22
We use computers every day, in our life, in our private life, in our work, in everything, 00:00:43
in everywhere because the internet has been changing our way of life. 00:01:02
And it eases our life in very different fields and I think in the future it will be continuing 00:01:10
changing our lives. 00:01:26
So obviously we need to study something about computers, something about the Internet, something 00:01:29
about IT technology. 00:01:42
Well last year we started to study all of this. 00:01:47
And now, as we are summarizing what we learned the year before, we summarize this also. 00:01:57
What is a computer? 00:02:11
A computer is an electronic device, an electronic machine, and it helps us to use information. 00:02:14
And this is the main reason why we say that computer science is only understood with a computer as its main machine, its main friend, its best friend. 00:02:34
A computer as a machine is a very complex one, but in order to study, we can see that a computer has two main systems, two main parts, which are hardware and software. 00:02:57
Hardware, as the name shows, is the physical part of the computer, what you can't touch. 00:03:17
And software is the logic part of the computer, something you aren't able to touch because it's an other thing. 00:03:33
Hardware itself can be categorized into four main categories, which are inputs, outputs, processes and storage. 00:03:45
For example, in a personal computer you have the keyboard, which is a hardware, is an input 00:04:03
hardware. You also have a screen, a monitor, which is output hardware and also 00:04:20
you can see the motherboard, which is the main functional part of the computer and 00:04:30
And there, in the model board, there is, it is, it is the microprocessing, which is a little bit, a little bit circuit, electronic circuit, 00:04:42
that we can't do a lot of processes in a very short time, it's very very fast. 00:05:07
And also you can see in the tower the hard disk which stores other parts, other information 00:05:19
for example the operating system and other information on the other hand 00:05:34
software is the logic part of the computer and obviously one of the most important part of 00:05:43
software is operating system because it's the interface between the humans and the machine 00:05:51
and it provides different instruments to manage and to manage hardware and software in the computer. 00:05:59
You can also have some apps, some applications software such as for example Office 00:06:14
and also development software, which are connected with new programs and applications. 00:06:27
As hardware, we can know, we can categorize in four parts, as I just already said. 00:06:37
and here you have the tower of the computer and for example the monitor 00:06:55
screen or the printer or the keyboard different parts of personal computers 00:07:03
and as I said before they are categorized into these four 00:07:12
possibilities. Obviously what the machine can do is just only detect if the 00:07:20
energy is here or is interrupted. So it usually modelizes in a binarine system 00:07:30
and it provides us very good mathematical tools to develop new applications and tools. 00:07:41
It is also a memory unit, it is very useful to store some information. 00:08:00
The byte whose values can be 0 or 1 is the minimum memory that you can have. 00:08:11
And if you have 8 bits you have a byte. 00:08:32
is very important because if you want to create a binarian world you need at least four bits, 00:08:39
so a world is eight. The main problem is that in the binarian system you have to use the 00:08:51
base 2. And if you want to create a kylobite, it's not 00:09:07
possible that use the base 10 and the value in this kind of system 00:09:21
which is a close to a thousand is this because is a 2 up to 10 and is the main 00:09:40
reason why the memory units in computers sizes don't be bigger using thousands, they are 00:10:00
bigger using 1034. In software concerns, as I have already said, you need an 00:10:15
operating system for example Windows it gives up the instruments and tool to 00:10:42
making the hardware and to making always all the applications and program and 00:10:53
and also, for example, the files you create in your computer, and other kind of utilities 00:11:01
One of these utilities could be Office 00:11:14
Office is very useful because you can do for example 00:11:18
text using Word, or presentations like this, or so on, and it's a very good program for 00:11:24
all this kind of documents but obviously our nowadays society couldn't be 00:11:41
couldn't be without the internet the internet is a computer network 00:12:00
So, if you want to create a computer network you need some hardware and some software. 00:12:07
As a hardware concept you need to have a network board, which is in the motherboard, a router 00:12:18
and also a cable. Well, new networks, computer networks, can be without any cable because 00:12:31
they are Wi-Fi. But, it depends, it's not for all of the networks, but you can, it is 00:12:42
possible that you need a keyboard. As software concepts you need the operating system and also 00:12:56
the TCP-EP protocol. The TCP-EP protocol is the way, the manner to identify our computer on the 00:13:06
internet. The internet is a computer network but bigger, very big, it's a wall network, so 00:13:27
to use you need a web navigator and if you want to look to search information 00:13:42
you need also searches. We are going to do some exercises connected with this 00:13:55
and I think it will be clear after doing them. And also other very 00:14:05
important service of the internet is email that is a it can be exchange information and it can be 00:14:16
give us the easiest share information and also communication and now we are going to 00:14:29
do some exercises and some activities because it is very necessary in this part of the subject. 00:14:42
Idioma/s:
en
Autor/es:
ISABEL LAFUENTE
Subido por:
Isabel L.
Licencia:
Reconocimiento - No comercial
Visualizaciones:
113
Fecha:
1 de noviembre de 2018 - 21:22
Visibilidad:
Público
Centro:
IES JAIME FERRAN
Duración:
14′ 56″
Relación de aspecto:
1.78:1
Resolución:
1920x1080 píxeles
Tamaño:
228.53 MBytes

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