GATE Solved Problems (2015-2016) | Logic Gates | Digital Electronics Neso Academy

Digital Electronics : GATE Solved Problems (Part 17) | Logic Gates

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1. بسمة الكون: sir, Thanks for your lecture. It's very helpful for us. Please sir would you help me in this question? Use sequential and combinational digital logic circuits to design and simulate a digital locking system that produces the following: 1.Output “1” if the correct sequence of three decimal-numerals is input to the circuit.(the sequence number are 280) 2. Output “0” if the wrong sequence of three decimal-numerals is input to the circuit 3.Count how many wrong attempts have been tried, 4. Give an alarm after three failures of entering the correct sequence of numerals. I think that I will use 8:1 Mux and the output will be as input to two D flip flops. Thanks;
2. Ganesh Prasad B K: for second question what was told in the lecture was wrong Gate 3 is universal gate.....AND,OR,NOT can be implemented using it..... https://drive.google.com/file/d/0B_DF2BU5DjWNMTRnRUNzdm1TUlU/view?usp=drivesdk
3. BRIGHT SITE: tnksss so much sir ....
4. Abhinav Bharadwaj: sir in 2nd problem u said d is correct option but actually option c is correct .the third gate can be converted into nor gate .
5. Sonu Halder: Nice question sir ...thanks for your explanation...
6. Ese Aspirant: can anybody plz tell how 2nd question is c option though in gate key it is mentioned ans c but from truth table gate 3 is not matching nor gate
7. Altamash Shahid: 3 rd question solution👌
8. AMIT JAKHAR: I think 3 is correct answer... Yes commented by other guys. We can implement all the 3 gate AND, OR and NOT gate. So please update the video
9. GAURAV VASHISHTHA: sir , please upload lectures on data acquisition unit. it will be very helpful
10. Altamash Shahid: Sir, Wrong answer for second question answer must be c as we can implement other gates by using the given gate no 3 too
11. Shweta Shirsat: This can be easily solved using kmap... Instead of truth table.. But anyways thanks for the explanation
12. Ankur Manju: question 3 mai truth table galat nahi hai????? ( 1 xor 0 ) = 1 .......not 0

GATE Solved Problems (2015-2016) | Logic Gates | Digital Electronics
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