{"id":17973,"date":"2023-05-02T13:00:53","date_gmt":"2023-05-02T13:00:53","guid":{"rendered":"https:\/\/sd-memory-cards.net\/?p=17973"},"modified":"2025-01-23T10:25:53","modified_gmt":"2025-01-23T10:25:53","slug":"how-do-sd-cards-work","status":"publish","type":"post","link":"https:\/\/sd-memory-cards.net\/pt\/como-funcionam-os-cartoes-sd\/","title":{"rendered":"Here&#8217;s How SD Memory Cards Work (Guide 2025)"},"content":{"rendered":"<p>Interroga-se <strong>How do SD cards work?<\/strong><\/p>\n<p>Neste artigo, iremos desvendar o funcionamento dos cart\u00f5es SD, que s\u00e3o dispositivos de armazenamento amplamente utilizados e compat\u00edveis com v\u00e1rios dispositivos, como computadores port\u00e1teis, c\u00e2maras, telefones, consolas de jogos e at\u00e9 autom\u00f3veis. Iremos abordar os princ\u00edpios fundamentais dos cart\u00f5es SD, incluindo a sua tecnologia, armazenamento e recupera\u00e7\u00e3o de dados e utiliza\u00e7\u00e3o correcta.<\/p>\n<p>On the other hand, we will address typical issues encountered with SD cards, such as corruption and write protection, and provide solutions to tackle them.<\/p>\n<p>&nbsp;<\/p>\n<h2 style=\"text-align: center;\">\u00a0Cart\u00e3o de mem\u00f3ria SD. O que \u00e9?<\/h2>\n<hr \/>\n<p>O <strong>SD Cart\u00e3o de mem\u00f3ria (Secure Digital)<\/strong> \u00e9 um dispositivo de armazenamento muito popular devido ao seu pequeno tamanho, grande capacidade de mem\u00f3ria, r\u00e1pida velocidade de transfer\u00eancia de dados e seguran\u00e7a fi\u00e1vel. Sendo um tipo de mem\u00f3ria flash, pode suportar milhares de grava\u00e7\u00f5es e mant\u00e9m o seu conte\u00fado sem necessitar de energia. Como resultado, \u00e9 amplamente utilizada em v\u00e1rios dispositivos, desde computadores a telem\u00f3veis, c\u00e2maras e at\u00e9 autom\u00f3veis.<\/p>\n<p>Outra vantagem dos cart\u00f5es SD \u00e9 o facto de n\u00e3o terem partes m\u00f3veis, o que os torna mais robustos e capazes de resistir a impactos acidentais. No entanto, \u00e9 importante notar que <strong>nem todos os dispositivos s\u00e3o compat\u00edveis com cart\u00f5es SD<\/strong>. Embora alguns aparelhos electr\u00f3nicos, como telefones e c\u00e2maras, tenham uma ranhura SD, podem estar configurados para n\u00e3o aceitarem cart\u00f5es SD. Quanto aos computadores, muitos t\u00eam ranhuras para cart\u00f5es de mem\u00f3ria SD e outros cart\u00f5es de mem\u00f3ria incorporadas. Mas se o seu computador n\u00e3o tiver uma ranhura, pode facilmente adquirir um leitor de cart\u00f5es de mem\u00f3ria USB para permitir a utiliza\u00e7\u00e3o de um cart\u00e3o SD.<\/p>\n<p><a href=\"https:\/\/sd-memory-cards.net\/wp-content\/uploads\/2023\/04\/micro-SD-card-adapter.webp\"><img decoding=\"async\" class=\"alignnone size-full wp-image-17977\" src=\"https:\/\/sd-memory-cards.net\/wp-content\/themes\/reco\/assets\/images\/transparent.gif\" data-lazy=\"true\" data-src=\"https:\/\/sd-memory-cards.net\/wp-content\/uploads\/2023\/04\/micro-SD-card-adapter.webp\" alt=\"adaptador de cart\u00e3o micro SD\" width=\"938\" height=\"364\" srcset=\"https:\/\/sd-memory-cards.net\/wp-content\/uploads\/2023\/04\/micro-SD-card-adapter.webp 938w, https:\/\/sd-memory-cards.net\/wp-content\/uploads\/2023\/04\/micro-SD-card-adapter-300x116.webp 300w, https:\/\/sd-memory-cards.net\/wp-content\/uploads\/2023\/04\/micro-SD-card-adapter-768x298.webp 768w, https:\/\/sd-memory-cards.net\/wp-content\/uploads\/2023\/04\/micro-SD-card-adapter-18x7.webp 18w, https:\/\/sd-memory-cards.net\/wp-content\/uploads\/2023\/04\/micro-SD-card-adapter-100x39.webp 100w, https:\/\/sd-memory-cards.net\/wp-content\/uploads\/2023\/04\/micro-SD-card-adapter-700x272.webp 700w\" sizes=\"(max-width: 938px) 100vw, 938px\" \/><\/a><\/p>\n<p>&nbsp;<\/p>\n<h2 style=\"text-align: center;\">Cart\u00f5es de mem\u00f3ria SD. Como \u00e9 que eles funcionam?<\/h2>\n<hr \/>\n<p>Apesar da familiaridade com os cart\u00f5es SD, muitos desconhecem o seu funcionamento em dispositivos electr\u00f3nicos como os telem\u00f3veis. Ent\u00e3o, como \u00e9 que os cart\u00f5es SD funcionam? A resposta \u00e9 a seguinte.<\/p>\n<p>Os cart\u00f5es SD utilizam <strong>Chips NAND<\/strong>que s\u00e3o componentes electr\u00f3nicos da mem\u00f3ria flash, para armazenar ficheiros digitais. Os chips NAND permitem que os dados sejam escritos e armazenados no cart\u00e3o SD sem necessidade de uma fonte de alimenta\u00e7\u00e3o. Sem partes m\u00f3veis, a transfer\u00eancia de dados dos cart\u00f5es SD \u00e9 r\u00e1pida. De facto, as velocidades de transfer\u00eancia de dados dos cart\u00f5es SD excedem as de outros dispositivos de armazenamento, como os CD ou os discos r\u00edgidos.<\/p>\n<p>Quando os dados s\u00e3o gravados num cart\u00e3o SD, s\u00e3o inicialmente armazenados numa mem\u00f3ria interm\u00e9dia. Posteriormente, os dados s\u00e3o registados em blocos de dados e armazenados nas c\u00e9lulas de mem\u00f3ria adequadas, que est\u00e3o organizadas em p\u00e1ginas. Cada p\u00e1gina inclui um n\u00famero espec\u00edfico de bytes de dados, juntamente com bytes adicionais para correc\u00e7\u00e3o de erros e informa\u00e7\u00e3o de controlo.<\/p>\n<p>Quando os dados s\u00e3o lidos a partir de um cart\u00e3o SD, o controlador l\u00ea os dados das c\u00e9lulas de mem\u00f3ria relevantes e transfere-os para o dispositivo que os solicita. Al\u00e9m disso, o controlador pode executar a correc\u00e7\u00e3o de erros e outras opera\u00e7\u00f5es para manter a integridade dos dados.<\/p>\n<p>Como <strong>Os chips NAND s\u00e3o altamente robustos<\/strong>Os cart\u00f5es SD podem ser gravados milhares de vezes ao longo da sua vida \u00fatil sem se desgastarem facilmente.<\/p>\n<p>Os cart\u00f5es SD t\u00eam diversos formatos. <a href=\"https:\/\/sd-memory-cards.net\/micro-sdhc-vs-sdxc\/\">Saiba a diferen\u00e7a entre os cart\u00f5es SDHC e SDXC SD &gt;&gt;&gt;<\/a><\/p>\n<h3><\/h3>\n<h3 style=\"text-align: center;\">SD Card Classe de velocidade<\/h3>\n<p>A velocidade do cart\u00e3o SD \u00e9 uma considera\u00e7\u00e3o crucial para os utilizadores. A classifica\u00e7\u00e3o da classe de velocidade de um cart\u00e3o SD indica a sua velocidade m\u00ednima de escrita, ou seja, a velocidade a que pode escrever dados no cart\u00e3o. Uma classifica\u00e7\u00e3o de classe de velocidade mais elevada implica que o cart\u00e3o tem uma capacidade de escrita mais r\u00e1pida.<\/p>\n<p>Os cart\u00f5es SD t\u00eam normalmente uma de tr\u00eas classifica\u00e7\u00f5es de classe de velocidade diferentes: Classe de velocidade, Classe de velocidade UHS e Classe de velocidade de v\u00eddeo. Cada classifica\u00e7\u00e3o representa a velocidade m\u00ednima de grava\u00e7\u00e3o de um cart\u00e3o SD e pode ajudar a seleccionar o cart\u00e3o adequado para necessidades espec\u00edficas.<\/p>\n<p>Leia o seguinte artigo para saber mais: <a href=\"https:\/\/sd-memory-cards.net\/sd-card-speed-classes-how-to-choose-guide\/\">Classes de velocidade SD Card (Guia de como escolher)<\/a>.<\/p>\n<p>&nbsp;<\/p>\n<h3 style=\"text-align: center;\">O que \u00e9 uma protec\u00e7\u00e3o de escrita?<\/h3>\n<p>Alguns cart\u00f5es SD possuem um <strong>\"mecanismo de \"bloqueio<\/strong> para evitar a perda inadvertida de dados. Isto \u00e9 conseguido atrav\u00e9s de um pequeno interruptor que, quando activado, pro\u00edbe o cart\u00e3o de aceitar novos dados ou de escrever por cima dos dados existentes. Al\u00e9m disso, \u00e9 simples remover a protec\u00e7\u00e3o contra escrita de um cart\u00e3o SD.<\/p>\n<p>Normalmente, o interruptor de protec\u00e7\u00e3o contra escrita encontra-se na parte lateral do cart\u00e3o SD, perto do nome da marca ou da etiqueta. Ele pode ser alternado entre as posi\u00e7\u00f5es de bloqueio e desbloqueio, deslizando-o para frente e para tr\u00e1s. Na posi\u00e7\u00e3o bloqueada, o cart\u00e3o est\u00e1 protegido contra escrita e n\u00e3o pode ser modificado, formatado ou escrito at\u00e9 que o interruptor seja movido para a posi\u00e7\u00e3o de desbloqueio.<\/p>\n<p>Esta funcionalidade \u00e9 especialmente \u00fatil para <strong>tratamento de dados sens\u00edveis<\/strong> ou utilizar o cart\u00e3o SD para armazenar ficheiros cr\u00edticos. Acrescenta uma camada extra de protec\u00e7\u00e3o contra a elimina\u00e7\u00e3o acidental ou corrup\u00e7\u00e3o, assegurando ao utilizador que os seus dados est\u00e3o seguros.<\/p>\n<p><a href=\"https:\/\/sd-memory-cards.net\/sd-card-write-protected\/\">Saiba como desbloquear o seu cart\u00e3o SD da prote\u00e7\u00e3o contra escrita&gt;&gt;&gt;<\/a><\/p>\n<h2><a href=\"https:\/\/sd-memory-cards.net\/wp-content\/uploads\/2023\/04\/write-protection.webp\"><img decoding=\"async\" class=\"size-full wp-image-17978 aligncenter\" src=\"https:\/\/sd-memory-cards.net\/wp-content\/themes\/reco\/assets\/images\/transparent.gif\" data-lazy=\"true\" data-src=\"https:\/\/sd-memory-cards.net\/wp-content\/uploads\/2023\/04\/write-protection.webp\" alt=\"protec\u00e7\u00e3o contra escrita\" width=\"580\" height=\"388\" srcset=\"https:\/\/sd-memory-cards.net\/wp-content\/uploads\/2023\/04\/write-protection.webp 580w, https:\/\/sd-memory-cards.net\/wp-content\/uploads\/2023\/04\/write-protection-300x201.webp 300w, https:\/\/sd-memory-cards.net\/wp-content\/uploads\/2023\/04\/write-protection-18x12.webp 18w, https:\/\/sd-memory-cards.net\/wp-content\/uploads\/2023\/04\/write-protection-100x67.webp 100w\" sizes=\"(max-width: 580px) 100vw, 580px\" \/><\/a><\/h2>\n<h2 class=\"JlqpRe\" style=\"text-align: center;\"><\/h2>\n<h2 style=\"text-align: center;\">Como utilizar os cart\u00f5es de mem\u00f3ria SD?<\/h2>\n<hr \/>\n<p>Seguem-se os passos a seguir para utilizar os cart\u00f5es SD em diferentes dispositivos electr\u00f3nicos:<\/p>\n<h3><strong>Utiliza\u00e7\u00e3o de um SD Card num computador:<\/strong><\/h3>\n<ol>\n<li>Insira o cart\u00e3o SD na ranhura para cart\u00f5es do seu computador.<\/li>\n<li>Abra o Explorador de ficheiros e localize a placa SD em Dispositivos e unidades. Normalmente, \u00e9 identificada pelo seu nome de marca e \u00e9-lhe atribu\u00edda uma letra de unidade.<\/li>\n<li>Fa\u00e7a duplo clique na unidade para aceder e gerir os ficheiros no cart\u00e3o SD ou transferir dados entre o cart\u00e3o e o computador.<\/li>\n<li>Quando terminar de usar o cart\u00e3o SD, \u00e9 importante remov\u00ea-lo com seguran\u00e7a do computador para evitar perda de dados ou corrup\u00e7\u00e3o do cart\u00e3o. Para o fazer, clique com o bot\u00e3o direito do rato na unidade e seleccione Ejectar.<\/li>\n<\/ol>\n<p>Se o seu cart\u00e3o SD for <strong>corrompido ou danificado<\/strong>consultar <a href=\"https:\/\/sd-memory-cards.net\/sd-card-corrupted\/\">este artigo<\/a> para solu\u00e7\u00f5es r\u00e1pidas e f\u00e1ceis.<\/p>\n<h3><strong>Aqui est\u00e3o as instru\u00e7\u00f5es para utilizar cart\u00f5es SD numa c\u00e2mara:<\/strong><\/h3>\n<ol>\n<li><strong>Formatar o SD<\/strong> <strong>cart\u00e3o<\/strong> antes da primeira utiliza\u00e7\u00e3o. Consulte o artigo seguinte para saber como formatar o seu cart\u00e3o SD: <a href=\"https:\/\/sd-memory-cards.net\/how-to-format-micro-sd-card-using-computer-or-mobile\/\">Como formatar micro SD Card usando computador ou telem\u00f3vel<\/a>. \u00c9 poss\u00edvel formatar o cart\u00e3o num computador, mas recomenda-se que o formate na c\u00e2mara para total compatibilidade com o tipo de ficheiro da c\u00e2mara.<\/li>\n<li>Desligue a c\u00e2mara e insira o cart\u00e3o SD na ranhura do cart\u00e3o.<\/li>\n<li>Ligue a c\u00e2mara e navegue at\u00e9 \u00e0 op\u00e7\u00e3o Menu ou Prefer\u00eancias.<\/li>\n<li>Procurar e seleccionar o <strong>Op\u00e7\u00e3o de formato<\/strong>.<\/li>\n<li>Confirme que pretende formatar o cart\u00e3o SD e aguarde a conclus\u00e3o do processo.<\/li>\n<\/ol>\n<p>Depois de formatar o cart\u00e3o SD, este est\u00e1 pronto a ser utilizado com a sua c\u00e2mara. Pode come\u00e7ar a captar as suas fotografias favoritas e guard\u00e1-las no cart\u00e3o SD.<\/p>\n<h3><strong>Usando um SD Card em um telefone:<\/strong><\/h3>\n<p>Nos smartphones actuais, as ranhuras para cart\u00f5es SD j\u00e1 n\u00e3o s\u00e3o t\u00e3o comuns como eram. Os fabricantes de telem\u00f3veis aumentaram significativamente a mem\u00f3ria interna dos seus dispositivos. No entanto, se tiver um telem\u00f3vel mais antigo com uma ranhura para cart\u00f5es SD, \u00e9 muito f\u00e1cil utilizar um cart\u00e3o SD. Basta inserir o cart\u00e3o SD na ranhura e seguir as instru\u00e7\u00f5es no ecr\u00e3 para o configurar.<\/p>\n<p>Em alguns telem\u00f3veis Android, pode at\u00e9 utilizar o cart\u00e3o SD como armazenamento interno.<\/p>\n<p>Se voc\u00ea achar que seu cart\u00e3o SD est\u00e1 corrompido, voc\u00ea pode consert\u00e1-lo dentro do seu telefone Android, basta seguir as instru\u00e7\u00f5es fornecidas no artigo: <a href=\"https:\/\/sd-memory-cards.net\/sd-card-corrupted-android\/\">Corrigir o SD Card Corrupted no Android Passo a Passo [Sem PC]<\/a>.<\/p>\n<p>Qual \u00e9 o pre\u00e7o de um cart\u00e3o SD? Ler <a href=\"https:\/\/sd-memory-cards.net\/how-much-is-a-micro-sd-card\/\">o seguinte artigo<\/a> para saber o pre\u00e7o actualizado das placas SD mais populares.<\/p>\n<p>&nbsp;<\/p>\n<h2 style=\"text-align: center;\">Qual deve ser a capacidade de armazenamento adequada para o meu SD Card?<\/h2>\n<hr \/>\n<p>A capacidade de GB adequada para o seu cart\u00e3o SD depende de v\u00e1rios factores, como a velocidade de fotogramas, a resolu\u00e7\u00e3o e a taxa de bits dos v\u00eddeos que pretende gravar. Normalmente, um <a href=\"https:\/\/sd-memory-cards.net\/how-many-pictures-can-32gb-hold-for-my-gopro\/\">32GB<\/a> ou <a href=\"https:\/\/sd-memory-cards.net\/how-many-pictures-can-64gb-hold\/\">64GB<\/a> O cart\u00e3o SD \u00e9 adequado para c\u00e2maras de v\u00eddeo que filmam em 1080p ou Full HD. No entanto, para filmar em 4K ou resolu\u00e7\u00f5es superiores, \u00e9 prefer\u00edvel optar por um cart\u00e3o SD de maior capacidade, como <a href=\"https:\/\/sd-memory-cards.net\/how-many-pictures-can-128gb-hold\/\">128GB<\/a> ou <a href=\"https:\/\/sd-memory-cards.net\/how-many-pictures-a-256gb-sd-card-can-hold-for-my-gopro\/\">256GB<\/a>para acomodar os ficheiros de maiores dimens\u00f5es.<\/p>\n<p>Considerar o <strong>taxa de bits da sua grava\u00e7\u00e3o de v\u00eddeo<\/strong>A taxa de bits mais elevada traduz-se em ficheiros de maiores dimens\u00f5es. Um v\u00eddeo 1080p de alta taxa de bits capturado a 60 fps pode exigir um cart\u00e3o SD com uma capacidade mais substancial em compara\u00e7\u00e3o com um v\u00eddeo 1080p de baixa taxa de bits gravado a 30 fps. Como regra geral, recomenda-se a escolha de um cart\u00e3o SD com uma capacidade superior \u00e0 necess\u00e1ria para garantir espa\u00e7o de armazenamento suficiente para os seus v\u00eddeos.<\/p>\n<p>&nbsp;<\/p>\n<p>&nbsp;<\/p>\n<p dir=\"ltr\" data-test-bidi=\"\">Obrigado por ler este guia!<\/p>\n<p dir=\"ltr\" data-test-bidi=\"\">Espero que tenha sido \u00fatil para lhe ensinar tudo o que precisa de saber sobre Como funcionam os cart\u00f5es SD.<\/p>\n<p dir=\"ltr\" data-test-bidi=\"\">N\u00e3o se esque\u00e7a de partilhar este artigo sobre as redes sociais com a sua fam\u00edlia e amigos!<\/p>\n<hr \/>\n<h3>Leia tamb\u00e9m:<\/h3>\n<ul>\n<li><a href=\"https:\/\/sd-memory-cards.net\/sd-card-vs-ssd\/\">SD Card vs SSD: 6 Principais diferen\u00e7as e recomenda\u00e7\u00f5es<\/a><\/li>\n<li><a href=\"https:\/\/sd-memory-cards.net\/sony-a6500-sd-card-size\/\">Sony a6500 SD Card Tamanho: Recomenda\u00e7\u00f5es e Top 5 Picks<\/a><\/li>\n<li><a href=\"https:\/\/sd-memory-cards.net\/32-gb-memory-card\/\">Melhores cart\u00f5es de mem\u00f3ria de 32GB (MicroSD &amp; SD Card)<\/a><\/li>\n<li><a href=\"https:\/\/sd-memory-cards.net\/samsung-evo-vs-sandisk-extreme\/\">Batalha de Cart\u00f5es de Mem\u00f3ria: Samsung Evo Plus vs SanDisk Extreme<\/a><\/li>\n<li><a href=\"https:\/\/sd-memory-cards.net\/7-best-sd-cards-for-sony-a7rv-2023-guide\/\">7 melhores SD Cards para a Sony a7RV<\/a><\/li>\n<\/ul>\n<div style='text-align:left' class='yasr-auto-insert-visitor'><\/div>","protected":false},"excerpt":{"rendered":"<p>Do you wonder How do SD cards work? In this article, will uncover the workings of SD cards, which are widely used storage devices compatible&#8230;<\/p>","protected":false},"author":939,"featured_media":17976,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_et_pb_use_builder":"","_et_pb_old_content":"","_et_gb_content_width":"","yasr_overall_rating":0,"yasr_post_is_review":"","yasr_auto_insert_disabled":"","yasr_review_type":"","footnotes":""},"categories":[51],"tags":[],"class_list":["post-17973","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-memory-cards"],"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v19.2.1 (Yoast SEO v27.9) - https:\/\/yoast.com\/product\/yoast-seo-premium-wordpress\/ -->\n<title>Here&#039;s How SD Memory Cards Work (Guide 2025)<\/title>\n<meta name=\"description\" content=\"Find out how do SD cards work and it usage on the computer, camera and phone +tips on the 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