{"id":9164,"date":"2022-07-19T10:24:33","date_gmt":"2022-07-19T10:24:33","guid":{"rendered":"https:\/\/www.prepbytes.com\/blog\/?p=9164"},"modified":"2022-08-30T03:31:15","modified_gmt":"2022-08-30T03:31:15","slug":"what-is-a-device-queue","status":"publish","type":"post","link":"https:\/\/prepbytes.com\/blog\/what-is-a-device-queue\/","title":{"rendered":"What is a device queue?"},"content":{"rendered":"<p><img decoding=\"async\" src=\"https:\/\/prepbytes-misc-images.s3.ap-south-1.amazonaws.com\/assets\/1658222777708-Article.jpg\" alt=\"\" \/><\/p>\n<h3>What is the queue?<\/h3>\n<p>A queue is basically a linear data structure that works on the principle of <a href=\"https:\/\/prepbytes.com\/blog\/queues\/different-types-of-queues-and-its-applications\/\" title=\"FIFO (First in First out)\">FIFO (First in First out)<\/a> which means an element that is enqueued(Insert) first will be dequeued(Remove)first. Element is enqueued from the rear end of the queue and dequeued from the front end. The insertion operation in the queue is known as enqueue and the deletion operation in the queue is known as dequeue.<br \/>\nThe queue is used when the operations are to be performed in the manner of First in First out order just like Breadth-First Search.<br \/>\nFor Example A ticket Queue outside a cinema hall where the person enters the queue first will get the ticket first.<\/p>\n<p><img decoding=\"async\" src=\"https:\/\/prepbytes-misc-images.s3.ap-south-1.amazonaws.com\/assets\/1658223561738-Image-01.png\" alt=\"\" \/><\/p>\n<h3>What is the device queue?<\/h3>\n<p>Device queues are also known as I\/O queue, device queue contains the processes which are waiting for the completion of I\/O request and the main is each device has its own device queue.<br \/>\nDevices usually have the device controller hardware and device driver software that work as the part of the <a href=\"https:\/\/prepbytes.com\/blog\/operating-system\/what-is-operating-system\/\" title=\"operating system\">operating system<\/a> to control it.<br \/>\nMany device drivers have a device queue in order to handle I\/O requests specific to the device.<br \/>\nLet\u2019s take an example, if we type a sentence using a keyboard, the sentence is received by the controller and will put it in the input queue.<br \/>\nThis I\/O queue is read by a driver and put on an input queue.<br \/>\nFrom the input data queue, it is moved to the ready queue for CPU processing, then the input request comes from the keyboard, mouse, touchscreen, and other such devices.<br \/>\nAfter the CPU processing, output requests are sent to output devices.<\/p>\n<p><img decoding=\"async\" src=\"https:\/\/prepbytes-misc-images.s3.ap-south-1.amazonaws.com\/assets\/1658223584938-Image-02.png\" alt=\"\" \/><\/p>\n<p>This article tried to discuss the concept of <strong>a device queue<\/strong>. Hope this blog helps you understand the concept. To practice problems you can check out <a href=\"#\"><\/a> at <a href=\"https:\/\/www.prepbytes.com\/\"> Prepbytes<\/a><\/p>\n","protected":false},"excerpt":{"rendered":"<p>What is the queue? A queue is basically a linear data structure that works on the principle of FIFO (First in First out) which means an element that is enqueued(Insert) first will be dequeued(Remove)first. Element is enqueued from the rear end of the queue and dequeued from the front end. The insertion operation in the [&hellip;]<\/p>\n","protected":false},"author":52,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_monsterinsights_skip_tracking":false,"_monsterinsights_sitenote_active":false,"_monsterinsights_sitenote_note":"","_monsterinsights_sitenote_category":0,"footnotes":""},"categories":[128],"tags":[],"class_list":["post-9164","post","type-post","status-publish","format-standard","hentry","category-queues"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v25.8 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>Queues | What Is a Device Queue? - Prepbytes Blog<\/title>\n<meta name=\"description\" content=\"The queue is used when the operations are to be performed in the manner of First in First out order just like Breadth-First Search.\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/prepbytes.com\/blog\/what-is-a-device-queue\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Queues | What Is a Device Queue? - Prepbytes Blog\" \/>\n<meta property=\"og:description\" content=\"The queue is used when the operations are to be performed in the manner of First in First out order just like Breadth-First Search.\" \/>\n<meta property=\"og:url\" content=\"https:\/\/prepbytes.com\/blog\/what-is-a-device-queue\/\" \/>\n<meta property=\"og:site_name\" content=\"PrepBytes Blog\" \/>\n<meta property=\"article:publisher\" content=\"https:\/\/www.facebook.com\/prepbytes0211\/\" \/>\n<meta property=\"article:published_time\" content=\"2022-07-19T10:24:33+00:00\" \/>\n<meta property=\"article:modified_time\" content=\"2022-08-30T03:31:15+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/prepbytes-misc-images.s3.ap-south-1.amazonaws.com\/assets\/1658222777708-Article.jpg\" \/>\n<meta name=\"author\" content=\"Prepbytes\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:label1\" content=\"Written by\" \/>\n\t<meta name=\"twitter:data1\" content=\"Prepbytes\" \/>\n\t<meta name=\"twitter:label2\" content=\"Est. reading time\" \/>\n\t<meta name=\"twitter:data2\" content=\"2 minutes\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\/\/schema.org\",\"@graph\":[{\"@type\":\"Article\",\"@id\":\"https:\/\/prepbytes.com\/blog\/what-is-a-device-queue\/#article\",\"isPartOf\":{\"@id\":\"https:\/\/prepbytes.com\/blog\/what-is-a-device-queue\/\"},\"author\":{\"name\":\"Prepbytes\",\"@id\":\"http:\/\/43.205.93.38\/#\/schema\/person\/3f7dc4ae851791d5947a7f99df363d5e\"},\"headline\":\"What is a device queue?\",\"datePublished\":\"2022-07-19T10:24:33+00:00\",\"dateModified\":\"2022-08-30T03:31:15+00:00\",\"mainEntityOfPage\":{\"@id\":\"https:\/\/prepbytes.com\/blog\/what-is-a-device-queue\/\"},\"wordCount\":316,\"commentCount\":0,\"publisher\":{\"@id\":\"http:\/\/43.205.93.38\/#organization\"},\"image\":{\"@id\":\"https:\/\/prepbytes.com\/blog\/what-is-a-device-queue\/#primaryimage\"},\"thumbnailUrl\":\"https:\/\/prepbytes-misc-images.s3.ap-south-1.amazonaws.com\/assets\/1658222777708-Article.jpg\",\"articleSection\":[\"Queues\"],\"inLanguage\":\"en-US\",\"potentialAction\":[{\"@type\":\"CommentAction\",\"name\":\"Comment\",\"target\":[\"https:\/\/prepbytes.com\/blog\/what-is-a-device-queue\/#respond\"]}]},{\"@type\":\"WebPage\",\"@id\":\"https:\/\/prepbytes.com\/blog\/what-is-a-device-queue\/\",\"url\":\"https:\/\/prepbytes.com\/blog\/what-is-a-device-queue\/\",\"name\":\"Queues | What Is a Device Queue? 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