{"id":18898,"date":"2024-04-15T05:32:15","date_gmt":"2024-04-15T05:32:15","guid":{"rendered":"https:\/\/exam.pscnotes.com\/mcq\/?p=18898"},"modified":"2024-04-15T05:32:15","modified_gmt":"2024-04-15T05:32:15","slug":"in-which-of-the-following-adder-circuits-the-carry-look-ripple-delay-is-eliminated-a-half-adder-b-full-adder-c-parallel-adder-d-carry-look-ahead-adder-e-none-of-the-above","status":"publish","type":"post","link":"https:\/\/exam.pscnotes.com\/mcq\/in-which-of-the-following-adder-circuits-the-carry-look-ripple-delay-is-eliminated-a-half-adder-b-full-adder-c-parallel-adder-d-carry-look-ahead-adder-e-none-of-the-above\/","title":{"rendered":"In which of the following adder circuits, the carry look ripple delay is eliminated? A. Half adder B. Full adder C. Parallel adder D. Carry-look-ahead adder E. None of the above"},"content":{"rendered":"<p>\r\n    <!-- Check if it's an AMP page -->\r\n            <!-- Non-AMP version -->\r\n        <div class=\"mcq-container\" data-quiz-id=\"quizState_6abe8340e0f0b\">\r\n                                            <div class=\"option\" data-option-key=\"option1\" data-is-correct=\"false\">\r\n                    Half adder                <\/div>\r\n                                            <div class=\"option\" data-option-key=\"option2\" data-is-correct=\"false\">\r\n                    Full adder                <\/div>\r\n                                            <div class=\"option\" data-option-key=\"option3\" data-is-correct=\"false\">\r\n                    Parallel adder                <\/div>\r\n                                            <div class=\"option\" data-option-key=\"option4\" data-is-correct=\"true\">\r\n                    Carry-look-ahead adder E. None of the above                <\/div>\r\n                            \r\n            <!-- Feedback messages for non-AMP -->\r\n            <div class=\"feedback\" data-feedback=\"wrong\">Answer is Right!<\/div>\r\n            <div class=\"feedback\" data-feedback=\"right\">Answer is Wrong!<\/div>\r\n        <\/div>\r\n\r\n        <script>\r\n        document.addEventListener('DOMContentLoaded', function () {\r\n            var containers = document.querySelectorAll('.mcq-container');\r\n\r\n            containers.forEach(function(container) {\r\n                var options = container.querySelectorAll('.option');\r\n                var feedbackSelect = container.querySelector('[data-feedback=\"select\"]');\r\n                var feedbackWrong = container.querySelector('[data-feedback=\"wrong\"]');\r\n                var feedbackRight = container.querySelector('[data-feedback=\"right\"]');\r\n\r\n                options.forEach(function(option) {\r\n                    option.addEventListener('click', function() {\r\n                        var selectedOption = option.getAttribute('data-option-key');\r\n                        var isCorrect = option.getAttribute('data-is-correct') === 'true';\r\n\r\n                        \/\/ Remove previous selections\r\n                        options.forEach(function(opt) {\r\n                            opt.classList.remove('correct', 'incorrect');\r\n                        });\r\n\r\n                        \/\/ Add the correct\/incorrect class\r\n                        if (isCorrect) {\r\n                            option.classList.add('correct');\r\n                            feedbackRight.hidden = false;\r\n                            feedbackWrong.hidden = true;\r\n                        } else {\r\n                            option.classList.add('incorrect');\r\n                            feedbackRight.hidden = true;\r\n                            feedbackWrong.hidden = false;\r\n                        }\r\n\r\n                        \/\/ Hide select feedback\r\n                        feedbackSelect.hidden = true;\r\n                    });\r\n                });\r\n            });\r\n        });\r\n        <\/script>\r\n    \r\n    <!--more--><\/p>\n<p>The correct answer is D. Carry-look-ahead adder.<\/p>\n<p>A half adder is a simple digital circuit that adds two single-bit numbers together. It produces two outputs: a sum bit and a carry <div class=\"youtube-subscribe-container\">\r\n        <a href=\"https:\/\/www.youtube.com\/channel\/UCNHT8lW-JmLC68rjBfZhdkg?sub_confirmation=1\" target=\"_blank\" class=\"youtube-subscribe-button\">\r\n            <span class=\"youtube-icon\">\r\n                <svg xmlns=\"http:\/\/www.w3.org\/2000\/svg\" viewBox=\"0 0 576 512\">\r\n                    <path d=\"M549.7 124.1c-6.3-23.7-24.8-42.3-48.3-48.6C458.8 64 288 64 288 64S117.2 64 74.6 75.5c-23.5 6.3-42 24.9-48.3 48.6-11.4 42.9-11.4 132.3-11.4 132.3s0 89.4 11.4 132.3c6.3 23.7 24.8 41.5 48.3 47.8C117.2 448 288 448 288 448s170.8 0 213.4-11.5c23.5-6.3 42-24.2 48.3-47.8 11.4-42.9 11.4-132.3 11.4-132.3s0-89.4-11.4-132.3zm-317.5 213.5V175.2l142.7 81.2-142.7 81.2z\"\/>\r\n                <\/svg>\r\n            <\/span>\r\n            Subscribe on YouTube\r\n        <\/a>\r\n    <\/div> bit. A full adder is a digital circuit that adds two single-bit numbers together and produces a carry bit for the next stage in a larger addition. A parallel adder is a digital circuit that adds two multi-bit numbers together in parallel. A <div class=\"telegram-channel-container\">\r\n        <a href=\"https:\/\/t.me\/pscnotes2025\" target=\"_blank\" class=\"telegram-channel-button\">\r\n            <span class=\"telegram-icon\">\r\n                <svg xmlns=\"http:\/\/www.w3.org\/2000\/svg\" viewBox=\"0 0 496 512\">\r\n                    <path fill=\"white\" d=\"M248,8C111,8,0,119,0,256s111,248,248,248s248-111,248-248S385,8,248,8z M362,177L320,367c-3,14-10,18-20,14l-56-41l-27,26 c-3,3-5,5-10,5l4-63L323,196c5-5-1-7-8-3l-98,62l-42-13c-9-3-10-9,2-14l162-63C351,160,365,164,362,177z\"\/>\r\n                <\/svg>\r\n            <\/span>\r\n            Join Our Telegram Channel\r\n        <\/a>\r\n    <\/div> carry-look-ahead adder is a digital circuit that eliminates the carry look ripple delay in a parallel adder.<\/p>\n<p>The carry look ripple delay is the time it takes for the carry bit to propagate through all the stages of a parallel adder. This delay can be significant for large adders. The carry-look-ahead adder eliminates this delay by calculating the carry bits for each stage in advance. This allows the carry bits to be propagated through the adder much faster.<\/p>\n<p>Here is a diagram of a 4-bit parallel adder:<\/p>\n<p>The carry look ripple delay in this adder is the time it takes for the carry bit to propagate from the first stage to the last stage. This delay is equal to the number of stages in the adder. For a 4-bit adder, the carry look ripple delay is 4.<\/p>\n<p>Here is a diagram of a 4-bit carry-look-ahead adder:<\/p>\n<p>The carry look ripple delay in this adder is zero. This is because the carry bits are calculated in advance and then propagated through the adder.<\/p>\n<p>The carry-look-ahead adder is a more complex circuit than the parallel adder, but it is faster. The carry-look-ahead adder is used in high-speed digital circuits, such as microprocessors.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Subscribe on YouTube<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[681],"tags":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v22.2 (Yoast SEO v23.3) - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>In which of the following adder circuits, the carry look ripple delay is eliminated? A. Half adder B. Full adder C. Parallel adder D. Carry-look-ahead adder E. 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