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In this video, I have explained how a 4-bit synchronous up/down counter works using T flip-flops, step-by-step. We solve a typical exam-style question where you're asked to process the circuit for given inputs and complete the output table. This is also an exercise problem 6.18 : What operation is performed in the up–down counter of Fig. 6.13 when both the up and down inputs are enabled? Modify the circuit so that when both inputs are equal to 1, the counter does not change state. This video is perfect for engineering and CS students studying digital logic design, especially if you’re preparing for quizzes, midterms, finals, or lab viva. 🧠 What’s Covered: Working of T Flip-Flop in counters How a synchronous up/down counter functions Step-by-step state transition explanation Clocking behavior and output interpretation Solved example with input analysis and table completion 📝 Question Highlight: 📌 Q. Consider the circuit given below. Process the circuit for given INPUTS and complete the table given below. [20] Whether you’re a beginner or need quick revision, this tutorial will clear your concepts with detailed explanation and logic table walkthrough. 📌 Don’t forget to like, share, and subscribe to stay updated with more digital logic design tutorials! ✅ The Channel link is below 👇👇👇 👉 https://www.youtube.com/channel/UCWAiAV3m08lldG31uEfFuEw?sub_confirmation=1 🟨🟥🟩 Feel Free to ask any questions in the comment section. Contact me at [email protected] for any other help. 🔉📣📢🔊Important Playlists: 🔴🟠🟡🟢 🔻 Podcasts : 👉 https://www.youtube.com/playlist?list=PLgWOIdHQBEz4IhHGuX2f0z4HcCWCrAmPL 🟩 University Admission Tips: 👉https://www.youtube.com/playlist?list=PLgWOIdHQBEz7CV7CJ2BrOhrtKkLXxG019 🔴 FAST University | FAST NUCES Videos 👇👇👇 👉 https://www.youtube.com/playlist?list=PLgWOIdHQBEz5EDT_amckb7FPfDhuL_dGy 🟢 Videos Related to Semester System Playlist 👇👇👇 https://www.youtube.com/playlist?list=PLgWOIdHQBEz6AsP01dmZjZJGS3EJ-lDcM 🔴 Entry Test Preparation Playlist 👇👇👇 👉 https://www.youtube.com/playlist?list=PLgWOIdHQBEz7D1JLLF-VJC2s-r1TuofS1 🟩 Digital Logic Design (DLD) Course Theory Playlist 👇👇👇 👉 https://www.youtube.com/playlist?list=PLgWOIdHQBEz6Ougd453k22nyPDNoNw_tX 🟢 Programming Fundamentals (PF) Full Course Playlist 👇👇👇 👉 https://www.youtube.com/playlist?list=PLgWOIdHQBEz5VmgyZ4IoByOHidsX4lpVF 🔻 Computer Organization & Assembly Language (COAL) Playlist: 👇👇👇 👉 https://www.youtube.com/playlist?list=PLgWOIdHQBEz5t__8v6eZXxKLTV8SGj5kN 🔴 Linear Circuit Analysis (LCA) Playlist 👇👇👇 👉 https://www.youtube.com/playlist?list=PLgWOIdHQBEz5avmCd6zUpuoFWsPVkbcjC 🔶 Digital Logic Design Lab (DLD Lab) Playlist 👇👇👇 👉 https://www.youtube.com/playlist?list=PLgWOIdHQBEz6s7eucAt6Wdkne6LwISPPp 🟡🟢🔵 COLA Lab Playlist: 👇👇👇 👉 https://www.youtube.com/playlist?list=PLgWOIdHQBEz7Ivtv2G71SsiTKen_mvWyq 🔶🔷Signals & Systems With MATLAB 👇👇👇 👉 https://www.youtube.com/playlist?list=PLgWOIdHQBEz40xA173hpV0gDrAyLWAiBi 🔵🔴🟤Probability and Statistics Playlist: 👇👇👇 👉 https://www.youtube.com/playlist?list=PLgWOIdHQBEz6JhLsKI2GLQen3O4rgZSrc 🔺🔻Data Structures and Algorithms Digital Logic Design Playlist 👇👇👇 👉 https://www.youtube.com/playlist?list=PLgWOIdHQBEz6UcbSzBNhAsPasWXRRShP1 ✅ Internet of Things (IoT) Playlist: 👇👇👇 👉 https://www.youtube.com/playlist?list=PLgWOIdHQBEz73MVqrRC1InRLMQFhJZHYD ⭕️ Competitive Exams Math’s Portion Solution : 👇👇👇 👉 https://www.youtube.com/playlist?list=PLgWOIdHQBEz61JrHSLMu_oUo1XpryqbiM 🔷 Feedback Control Systems Lab: 👇👇👇 👉 https://www.youtube.com/playlist?list=PLgWOIdHQBEz5Iwlfxfrr69vDJIKCsOMTS ☑️ ✔️Introductory Videos : 👇👇👇 👉 https://www.youtube.com/playlist?list=PLgWOIdHQBEz6lE1szjK6D7Puk5TC3RTq8 #tflipflop #updowncounter #synchronouscounter #4bitcounter #digitaldesign #logicdesign #dld #digitalcircuits #counterproblem #flipflops #engineeringstudents #csstudents #fastuniversity
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