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	<title>Diagnóstico de erros</title>
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	<description>Neste blog vou falar mais propriamente de diagonósticos de erros, construção de um PC, etc…</description>
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		<title>Diagnóstico de erros</title>
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		<item>
		<title>Interligação CPU-Periférico</title>
		<link>http://silva12.wordpress.com/2009/02/14/interligacao-cpu-periferico/</link>
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		<pubDate>Sat, 14 Feb 2009 10:00:35 +0000</pubDate>
		<dc:creator>michelsilva</dc:creator>
				<category><![CDATA[Geral]]></category>

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		<description><![CDATA[Visão do CPU em relação às entradas/saídas Input/Output (entrada/saída) - Duas das três actividades (entrada, processamento e saída) que caracterizam um computador. Entrada e Saída são as tarefas complementares de leitura e transferência de dados ao microprocessador e, depois de serem processados, a sua comunicação ao utilizadro é feita através de um dispositivo como vídeo, [...]<img alt="" border="0" src="http://stats.wordpress.com/b.gif?host=silva12.wordpress.com&amp;blog=5061501&amp;post=113&amp;subd=silva12&amp;ref=&amp;feed=1" width="1" height="1" />]]></description>
			<content:encoded><![CDATA[<p><img class="alignnone size-full wp-image-116" title="inteligacao1" src="http://silva12.files.wordpress.com/2009/02/inteligacao1.jpg?w=450" alt="inteligacao1"   /></p>
<p>Visão do CPU em relação às entradas/saídas</p>
<p style="text-align:justify;"><strong><span style="font-family:Arial;font-size:x-small;"><a name="Input/Output">Input</a></span></strong><span style="font-family:Arial;font-size:x-small;"><a name="Input/Output">/<strong>Output</strong> </a> (entrada/saída) <strong>- </strong>Duas das três actividades (entrada, processamento e saída) que caracterizam um computador. Entrada e Saída são as tarefas complementares de leitura e transferência de dados ao microprocessador e, depois de serem processados, a sua comunicação ao utilizadro é feita através de um dispositivo como vídeo, uma unidade de disco ou uma impressora. O teclado e orato são dispositivos de entrada que colocam informações à disposição do computador; o vídeo e a impressora são dispositivos de saída com os quais o computador coloca os seus resultados à disposição do utilizador. A unidade de disco é, ao mesmo tempo, uma unidade de entrada e saída, porque permite a leitura para fornecimento de informações ao computador e a gravação para registro dos resultados de processamento.</span></p>
<p><span style="font-family:Arial;font-size:x-small;"><br />
</span></p>
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			<media:title type="html">michelsilva</media:title>
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		<title>Evolução dos microprocessadores</title>
		<link>http://silva12.wordpress.com/2009/02/14/evolucao-dos-microprocessadores/</link>
		<comments>http://silva12.wordpress.com/2009/02/14/evolucao-dos-microprocessadores/#comments</comments>
		<pubDate>Sat, 14 Feb 2009 08:00:55 +0000</pubDate>
		<dc:creator>michelsilva</dc:creator>
				<category><![CDATA[Geral]]></category>

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			<media:title type="html">michelsilva</media:title>
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		<title>Componentes dos microprocessadores</title>
		<link>http://silva12.wordpress.com/2009/02/13/componentes-dos-microprocessadores/</link>
		<comments>http://silva12.wordpress.com/2009/02/13/componentes-dos-microprocessadores/#comments</comments>
		<pubDate>Fri, 13 Feb 2009 11:00:12 +0000</pubDate>
		<dc:creator>michelsilva</dc:creator>
				<category><![CDATA[Geral]]></category>

		<guid isPermaLink="false">http://silva12.wordpress.com/?p=93</guid>
		<description><![CDATA[Componentes lógicos Alu componente do CPU responsável por todas as decisões do microprocessador baseadas em cálculos matemáticos e funções lógicas; BUS (comunicação interna) é um barramento, usado por uma UCP ou por dispositivos capazes de usar DMA para informar os endereços físicos/locações de memória de um computador que o microprocessador ou dispositivo deseja acessar (ler/escrever); [...]<img alt="" border="0" src="http://stats.wordpress.com/b.gif?host=silva12.wordpress.com&amp;blog=5061501&amp;post=93&amp;subd=silva12&amp;ref=&amp;feed=1" width="1" height="1" />]]></description>
			<content:encoded><![CDATA[<p style="text-align:center;"><strong>Componentes lógicos</strong></p>
<p style="text-align:center;"><img class="alignnone size-full wp-image-96" title="alu" src="http://silva12.files.wordpress.com/2009/02/alu.png?w=450" alt="alu"   /></p>
<p style="text-align:left;"><strong>Alu</strong> componente do CPU responsável por todas as decisões do microprocessador baseadas em cálculos matemáticos e funções lógicas;</p>
<p><strong>BUS (comunicação interna) </strong>é um barramento, usado por uma UCP ou por dispositivos capazes de usar DMA para informar os endereços físicos/locações de memória de um computador que o microprocessador ou dispositivo deseja acessar (ler/escrever);</p>
<p><strong>Registos</strong> é um tipo de memória de pequena capacidade porém muito rápida, contida no CPU, utilizada no armazenamento temporário durante o processamento. Os registradores estão no topo da hierarquia de memória, sendo assim são o meio mais rápido e caro de se armazenar um dado.</p>
<p><strong>Unidade de controlo </strong>responsável por gerar todos os sinais que controlam as operações no exterior do CPU, e ainda por dar todas as instruções para o correcto funcionamento interno do CPU; a apoiá-la/o terá a colaboração de uma outra estrutura/actor (o decodificador de instruções).</p>
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			<media:title type="html">michelsilva</media:title>
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			<media:title type="html">alu</media:title>
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		<item>
		<title>Funcionamento dos microprocessadores</title>
		<link>http://silva12.wordpress.com/2009/02/12/funcionamento-dos-microprocessadores/</link>
		<comments>http://silva12.wordpress.com/2009/02/12/funcionamento-dos-microprocessadores/#comments</comments>
		<pubDate>Thu, 12 Feb 2009 09:00:39 +0000</pubDate>
		<dc:creator>michelsilva</dc:creator>
				<category><![CDATA[Geral]]></category>

		<guid isPermaLink="false">http://silva12.wordpress.com/?p=98</guid>
		<description><![CDATA[Alu componente do CPU responsável por todas as decisões do microprocessador baseadas em cálculos matemáticos e funções lógicas; BUS é um barramento, usado por uma UCP ou por dispositivos capazes de usar DMA para informar os endereços físicos/locações de memória de um computador que o microprocessador ou dispositivo deseja acessar (ler/escrever); Registos é um tipo [...]<img alt="" border="0" src="http://stats.wordpress.com/b.gif?host=silva12.wordpress.com&amp;blog=5061501&amp;post=98&amp;subd=silva12&amp;ref=&amp;feed=1" width="1" height="1" />]]></description>
			<content:encoded><![CDATA[<p style="text-align:left;"><strong>Alu</strong> componente do CPU responsável por todas as decisões do microprocessador baseadas em cálculos matemáticos e funções lógicas;</p>
<p><strong>BUS </strong>é um barramento, usado por uma UCP ou por dispositivos capazes de usar DMA para informar os endereços físicos/locações de memória de um computador que o microprocessador ou dispositivo deseja acessar (ler/escrever);</p>
<p><strong>Registos</strong> é um tipo de memória de pequena capacidade porém muito rápida, contida no CPU, utilizada no armazenamento temporário durante o processamento. Os registradores estão no topo da hierarquia de memória, sendo assim são o meio mais rápido e caro de se armazenar um dado.  <strong><br />
</strong></p>
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			<media:title type="html">michelsilva</media:title>
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		<title>Definição de microprocessadores</title>
		<link>http://silva12.wordpress.com/2009/02/11/definicao-de-microprocessadores/</link>
		<comments>http://silva12.wordpress.com/2009/02/11/definicao-de-microprocessadores/#comments</comments>
		<pubDate>Wed, 11 Feb 2009 10:00:16 +0000</pubDate>
		<dc:creator>michelsilva</dc:creator>
				<category><![CDATA[Geral]]></category>

		<guid isPermaLink="false">http://silva12.wordpress.com/?p=78</guid>
		<description><![CDATA[O microprocessador é um circuito integrado formado por uma camada chamada de mesa epitaxial de silício(semicondutores), trabalhada de modo a formar um cristal de extrema pureza, laminada até uma espessura mínima com grande precisão, depois cuidadosamente mascarada por um processo fotográfico e dopada pela exposição a altas temperaturas em fornos que contêm misturas gasosas de [...]<img alt="" border="0" src="http://stats.wordpress.com/b.gif?host=silva12.wordpress.com&amp;blog=5061501&amp;post=78&amp;subd=silva12&amp;ref=&amp;feed=1" width="1" height="1" />]]></description>
			<content:encoded><![CDATA[<p>O microprocessador é um circuito integrado formado por uma camada chamada de mesa epitaxial de silício(semicondutores), trabalhada de modo a formar um cristal de extrema pureza, laminada até uma espessura mínima com grande precisão, depois cuidadosamente mascarada por um processo fotográfico e dopada pela exposição a altas temperaturas em fornos que contêm misturas gasosas de impurezas.</p>
<p><strong>Microprocessador</strong> &#8211; um processador em um único circuito integrado.<br />
<img src="/DOCUME~1/ssl/DEFINI~1/Temp/moz-screenshot.jpg" alt="" /></p>
<p style="text-align:center;"><img class="size-full wp-image-91 aligncenter" title="intelcelerond" src="http://silva12.files.wordpress.com/2009/02/intelcelerond.jpg?w=450" alt="intelcelerond"   /></p>
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			<media:title type="html">michelsilva</media:title>
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		<title>Um pouco de Historia dos microprocessadores</title>
		<link>http://silva12.wordpress.com/2009/02/10/um-pouco-de-historia-dos-microprocessadores/</link>
		<comments>http://silva12.wordpress.com/2009/02/10/um-pouco-de-historia-dos-microprocessadores/#comments</comments>
		<pubDate>Tue, 10 Feb 2009 15:56:12 +0000</pubDate>
		<dc:creator>michelsilva</dc:creator>
				<category><![CDATA[Geral]]></category>

		<guid isPermaLink="false">http://silva12.wordpress.com/?p=83</guid>
		<description><![CDATA[Década de 70 Intel produz microprocessador com sucesso comercial (8088 e 8086, 4.75 MHz e 8 MHz sobre uma bus 16 bits); 1981 IBM produz primeiro computador pessoal (IBM – PC): - incluía o processador 8088 - MS-DOS como sistema operativo, ficou conhecido por PC-DOS; 1982 Standard PC-IBM - Microprocessador da família x86, - Sistema [...]<img alt="" border="0" src="http://stats.wordpress.com/b.gif?host=silva12.wordpress.com&amp;blog=5061501&amp;post=83&amp;subd=silva12&amp;ref=&amp;feed=1" width="1" height="1" />]]></description>
			<content:encoded><![CDATA[<p><strong>Década de 70</strong><br />
Intel produz microprocessador com sucesso comercial (8088 e 8086, 4.75 MHz e 8 MHz sobre uma bus 16 bits);</p>
<p><img class="alignnone size-full wp-image-85" title="1" src="http://silva12.files.wordpress.com/2009/02/1.jpg?w=450" alt="1"   /></p>
<p><strong>1981</strong><br />
IBM produz primeiro computador pessoal (IBM – PC):<br />
- incluía o processador 8088<br />
- MS-DOS como sistema operativo, ficou conhecido por PC-DOS;</p>
<p><img class="alignnone size-full wp-image-86" title="pc6" src="http://silva12.files.wordpress.com/2009/02/pc6.jpg?w=450" alt="pc6"   /></p>
<p><strong>1982</strong><br />
Standard PC-IBM<br />
- Microprocessador da família x86,<br />
- Sistema Operativo MS-DOS;<br />
Compatibilidade entre computadores;<br />
Criação dos microprocessadores da família x86;<br />
IBM lança computador equipado com P 80286; desempenhando entre 1,2 e 2,6 MIPS (Million Instructions Per Second);</p>
<p><img class="alignnone size-full wp-image-87" title="images" src="http://silva12.files.wordpress.com/2009/02/images.jpg?w=450" alt="images"   /></p>
<p><strong>1985</strong><br />
Surge o 80386 (bus 32 bits) desempenhando entre 5 e 16 MIPS;<br />
<strong>1989</strong><br />
Aparece o 80486 desempenhando entre 20 e 54 MIPS;<br />
<strong>1993</strong><br />
Surge o Pentium (bus 64 bits) com um desempenho superior a 100 MIPS.</p>
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			<media:title type="html">michelsilva</media:title>
		</media:content>

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			<media:title type="html">1</media:title>
		</media:content>

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			<media:title type="html">pc6</media:title>
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			<media:title type="html">images</media:title>
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		<item>
		<title>Passos necessários à correcta alteração de componentes num computador</title>
		<link>http://silva12.wordpress.com/2008/12/02/passos-necessarios-a-correcta-alteracao-de-componentes-num-computador/</link>
		<comments>http://silva12.wordpress.com/2008/12/02/passos-necessarios-a-correcta-alteracao-de-componentes-num-computador/#comments</comments>
		<pubDate>Tue, 02 Dec 2008 16:17:08 +0000</pubDate>
		<dc:creator>michelsilva</dc:creator>
				<category><![CDATA[Geral]]></category>

		<guid isPermaLink="false">http://silva12.wordpress.com/?p=71</guid>
		<description><![CDATA[Para proceder à correcta alteração de componentes num computador deve-mos fazer o seguinde: Ler as instruções do respectivo componente. Existem várias placas em que é necessário a instalação de driveres. Os actuais computadores possuem vários tipos de encaixe para diferentes componentes, tais como ranhuras para placas PCI de 32 e 64 bits PCI, placa AGP, [...]<img alt="" border="0" src="http://stats.wordpress.com/b.gif?host=silva12.wordpress.com&amp;blog=5061501&amp;post=71&amp;subd=silva12&amp;ref=&amp;feed=1" width="1" height="1" />]]></description>
			<content:encoded><![CDATA[<p style="margin-bottom:0;"><span style="font-size:small;">Para proceder à correcta alteração de componentes num computador deve-mos fazer o seguinde:</span></p>
<ul>
<li>
<pre><span style="font-size:small;">Ler as instruções do respectivo componente. Existem várias placas em que é necessário a instalação de <em>driveres</em>.</span></pre>
</li>
<li>
<pre><span style="font-size:small;">Os actuais computadores possuem vários tipos de encaixe para diferentes componentes, tais como ranhuras para placas  PCI de 32 e 64 bits PCI, placa AGP, placas de vídeo PCI Express x16 ou expansões Express x1. Verifique atenciosamente qual a adquada à placa que pretende instalar ou substituir.</span></pre>
</li>
<li>
<pre><span style="font-size:small;">Existe uma entrada na parte de trás da caixa. As entradas que não estão ocupadas, estão protegidas por uma chapa metálica, que deve ser removida se for necessário.</span></pre>
</li>
<li>
<pre><span style="font-size:small;">Se um cabo o impede o acesso a uma ranhura pretendida, mova-o de posição com cuidado.</span></pre>
</li>
<li>
<pre><span style="font-size:small;">As placas deveram ser colocadas com especial cuidado. Coloque-a em posição, verifique se vai encaixar corretamente sem causar algum tipo de dano e depois pressione a placa suavemente até que fique fixa.</span></pre>
</li>
</ul>
<pre><span style="font-size:small;">Ligue todos os cabos, internos e externos, feche a caixa e ligue o computador.</span></pre>
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			<media:title type="html">michelsilva</media:title>
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	</item>
		<item>
		<title>Instalação de uma placa de video</title>
		<link>http://silva12.wordpress.com/2008/11/19/65/</link>
		<comments>http://silva12.wordpress.com/2008/11/19/65/#comments</comments>
		<pubDate>Wed, 19 Nov 2008 16:37:59 +0000</pubDate>
		<dc:creator>michelsilva</dc:creator>
				<category><![CDATA[Geral]]></category>

		<guid isPermaLink="false">http://silva12.wordpress.com/?p=65</guid>
		<description><![CDATA[Neste video poderá observar uma instalação física de uma placa de videio.<img alt="" border="0" src="http://stats.wordpress.com/b.gif?host=silva12.wordpress.com&amp;blog=5061501&amp;post=65&amp;subd=silva12&amp;ref=&amp;feed=1" width="1" height="1" />]]></description>
			<content:encoded><![CDATA[<p>Neste video poderá observar uma instalação física de uma placa de videio.</p>
<span style="text-align:center; display: block;"><a href="http://silva12.wordpress.com/2008/11/19/65/"><img src="http://img.youtube.com/vi/Z7dBELhb7n0/2.jpg" alt="" /></a></span>
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			<media:title type="html">michelsilva</media:title>
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	</item>
		<item>
		<title>Video</title>
		<link>http://silva12.wordpress.com/2008/11/18/video/</link>
		<comments>http://silva12.wordpress.com/2008/11/18/video/#comments</comments>
		<pubDate>Tue, 18 Nov 2008 16:24:16 +0000</pubDate>
		<dc:creator>michelsilva</dc:creator>
				<category><![CDATA[Geral]]></category>

		<guid isPermaLink="false">http://silva12.wordpress.com/?p=61</guid>
		<description><![CDATA[O vídeo, é uma a tecnologia de processamento de sinais eletrónicos analógicos ou digitais que captura, armazena, transmite e apresenta imagens em movimento. O termo vídeo ganhou com o tempo uma grande abrangência, chama-se também de vídeo uma gravação de imagens em movimento, uma animação composta por fotos sequenciais que resultam numa imagem animada, e [...]<img alt="" border="0" src="http://stats.wordpress.com/b.gif?host=silva12.wordpress.com&amp;blog=5061501&amp;post=61&amp;subd=silva12&amp;ref=&amp;feed=1" width="1" height="1" />]]></description>
			<content:encoded><![CDATA[<p>O <span>vídeo</span>, é uma a tecnologia de processamento de sinais eletrónicos analógicos ou digitais que captura, armazena, transmite e apresenta imagens em movimento.</p>
<p>O termo <span>vídeo</span> ganhou com o tempo uma grande abrangência, chama-se também de <span>vídeo</span> uma gravação de imagens em movimento, uma animação composta por fotos sequenciais que resultam numa imagem animada, e principalmente <span>as diversas formas para se gravar imagens em fitas (analógicas ou digitais).<br />
</span></p>
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			<media:title type="html">michelsilva</media:title>
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		<title>O computador tem som mas leitor de CD não reproduz</title>
		<link>http://silva12.wordpress.com/2008/10/31/o-computador-tem-som-mas-leitor-de-cd-nao-reproduz/</link>
		<comments>http://silva12.wordpress.com/2008/10/31/o-computador-tem-som-mas-leitor-de-cd-nao-reproduz/#comments</comments>
		<pubDate>Fri, 31 Oct 2008 15:49:53 +0000</pubDate>
		<dc:creator>michelsilva</dc:creator>
				<category><![CDATA[Problemas de som]]></category>

		<guid isPermaLink="false">http://silva12.wordpress.com/?p=54</guid>
		<description><![CDATA[Alguns computadores necessitam de cabos para ligar cabos diferenciados para ligar o leitor de CD&#8217;s á placa mãe (motherboard); Verificar se essa ligação existe; Se essa ligação não existe pode-se ligar o som à entrada do microfone; Verificar as ligações do leitor de CD à placa de som e placa mãe (motherboard); Verificar todos os [...]<img alt="" border="0" src="http://stats.wordpress.com/b.gif?host=silva12.wordpress.com&amp;blog=5061501&amp;post=54&amp;subd=silva12&amp;ref=&amp;feed=1" width="1" height="1" />]]></description>
			<content:encoded><![CDATA[<ul>
<li>Alguns computadores necessitam de cabos para ligar cabos diferenciados para ligar o leitor de CD&#8217;s á placa mãe (motherboard);</li>
<li>Verificar se essa ligação existe;</li>
<li>Se essa ligação não existe pode-se ligar o som à entrada do microfone;</li>
<li>Verificar as ligações do leitor de CD à placa de som e placa mãe (motherboard);</li>
<li>Verificar todos os sistemas de som no sistema operativo;</li>
<li>Trocar hardware;</li>
<li>Um canal não se ouve;</li>
<li>Verificar controlo de volume;</li>
<li>Se existe disponível um par de auscultadores ligados a todas as saídas para localizar o problema;</li>
<li>Verificar som nas colunas;</li>
<li>Substituir hardware.</li>
</ul>
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			<media:title type="html">michelsilva</media:title>
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