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computer - Contenido educativo
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We are living in what is usually called Information Age Society.
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And one of the characteristics of this model is that they use electronic devices.
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All the electronic devices have the same structure,
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and the content that they are going to explain for the computers
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It can be applied to laptops or also to mobile phones or tablets. So it's in general, not just only for computers, it's in general for all the electronic devices, this Sharper. And it's the same for all of them.
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Well, first of all, here you have a small index, so we are going to talk about firstly some basic definitions.
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One of them is computing. Computing is the automatic and rational use of the information with computers.
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Computer science is the science which usually have as objective to computing, so it's very very important.
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So for computing you need a computer, obviously, and a computer is just a machine that processes or deals with big quantities of data
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very quickly well that could be not a very good definition but indeed is
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is difficult to define a computer obviously it's a machine and obviously is an electronic machine
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but the rest is difficult because nowadays you can use computer for so many things not
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just only to deal with quantities of data you also can use with different
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for example with graphics and photos and it's a it's quite it's quite i think it's
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more complicated now it has more than this application but it could be a definition
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This is that you make your own definition about computers, taking into consideration
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your own experience.
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In any case, all the electronic devices and also computers have two main systems, which
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are hardware and software.
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is the physical part of the computer or electronic devices in general and
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software is the logical part of the computer the logical part the logic
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basic part is a set of instruction and programs is the logic the logic basic of
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the computer. We are going to study hardware. In order to do better our study, we can divide
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the hardware into four main cases, four main types, which are input hardware, output hardware,
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stored and processed. Input hardware is all this hardware that it uses to enter
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information. Here you have two good examples, for example the keyboard and the mouse.
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You can also, for example, use a microphone that is only an input
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hardware and you can also have another type of input hardware, a scanner for
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example is also an input hardware. In output hardware let us to take the information
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out of the computer. Here you have two good examples, the screen, the monitor
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and also a printer you also have so many so many hardware escapes that was for
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example screen of monitor printer you have another ones that are also these
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It's important to know the process hardware. In this case, in your computer, apart from other things,
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in the tower of your computer, inside the tower of your computer, you can see the motherboard.
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And in the motherboard, there are the most important hardware of your computer.
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In the motherboard you can see the microprocessor. Microprocessor is the most important hardware of process.
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It also can be divided into three or more parts, which are register array, control unit and arithmetical logic unit.
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So in a microprocessor you have some input information and in the processor it usually does a lot of simple processes as arymergic etiquette and logical processes, but very quickly.
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So you usually need in the output and the input a unit of memory in which you can store the information and it's part of the computer. It's what usually someone usually call cache memory.
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hardware, such as RAM and ROM memory. RAM and ROM memory are part of motherboard. In
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ROM memory you can store information that just only can read, it's a read-only memory,
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and in the RAM memory you can have information that you can delete if you want or you need,
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because it's random access memory.
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It's a memory that you can access at random.
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But in your computer also have a very important
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stored hardware, which is the hard disk.
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Nowadays, the hard disk is disappearing,
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but in any case, we still have a hard disk.
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In the hard disk, usually you store very important information for your computer, such as operating system, as we can describe later.
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Operating system is very important for the computer, but you can also store another important information.
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You also have different types of stored hardware, such as pendrives,
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such as another kind of hardware in which you can store information files and also it can be
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classified as input-output hardware so all of these are very very important to connect your
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computer to other hardware you need ports so you can have different types of ports that you can see
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in your tower or in your in your computer obviously to connect monitors you need a
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a big port to connect for example a other so many types of hardware nowadays you use a use usb
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port so it's very important the ports are very important to connect your computer to
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different types of hardware. What happens in a computer is
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that the machine itself just only know the energy, if it is generate it is
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current or it isn't because it's an electronic machine. So the only thing
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that they is capable to know is that if there is current or not. So in order to
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store information and to process information we need to codify the
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information using something that can express these two things, just only these
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to think. And there is a mathematical model which is the digital model. In the digital model
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everything can be expressed using just only 0 and 1. So you can express your 10 digits using
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just only two and you can codify the information using just only these these two states
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it's very complicated but you can do it and what what happened is if you you need to to express
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something more than one decimal digit you need at least eight bit to do it
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That is the reason why one unit of memory is usually called byte, and a byte has 8 bits.
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As we need the digital model, our digits are just only two.
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So, it's impossible that you can express 1000 using 2 as a base.
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The closest is 1024.
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that there is a way if you want to interchange from one byte to the next unit,
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which is kilobyte,
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a kilobyte is not just only 1,000 bytes,
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is indeed 1,024 bytes.
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So it's important for all of us to know this.
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- Idioma/s:
- Autor/es:
- Isabel Lafuente
- Subido por:
- Isabel L.
- Licencia:
- Reconocimiento - No comercial
- Visualizaciones:
- 266
- Fecha:
- 2 de abril de 2019 - 15:11
- Visibilidad:
- Público
- Centro:
- IES JAIME FERRAN
- Duración:
- 13′ 22″
- Relación de aspecto:
- 4:3 Hasta 2009 fue el estándar utilizado en la televisión PAL; muchas pantallas de ordenador y televisores usan este estándar, erróneamente llamado cuadrado, cuando en la realidad es rectangular o wide.
- Resolución:
- 1440x1080 píxeles
- Tamaño:
- 139.69 MBytes
