3 bits Synchronous Up Down Counter (Designing, Circuit & Working), Digital Electronics

In this video, i have explained 3 bits Synchronous Up Down Counter with following timecodes:
0:00 - Digital Electronics Lecture Series
0:22 - Designing steps of Up Down Synchronous Counter
1:21 - Step - 1 - Identify Number of bits and Flip Flop
1:30 - Step - 2 - Excitation Table of T Flip Flop
2:34 - Step - 3 - State Diagram and State Table
9:24 - Step - 4 - Boolean Expression using K Map
12:16 - Step - 5 - Circuit of Up Down Synchronous Counter
Following points are covered in this video:
0. Counter
1. Synchronous Counter
2. 3 bits Synchronous Up Down Counter
3. Circuit of 3 bits Synchronous Up Down Counter
4. Working of 3 bits Synchronous Up Down Counter
5. Waveforms of 3 bits Synchronous Up Down Counter
6. State Table of 3 bits Synchronous Up Down Counter
Engineering Funda channel is all about Engineering and Technology. Here this video is a part of Digital Electronics and Sequential circuit.
#3bitsUporDownSynchronousCounter, #Circuitof3bitsUporDownSynchronousCounter, #Waveformsof3bitsUporDownSynchronousCounter, #StateTableof3bitsUporDownSynchronousCounter #DigitalElectronics, #Sequentialcircuit, #DigitalLogicDesign
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[@akorfadagadu9158]

Why is that when writing the bits for down counting, you move from 111 to 000 and not 111 to 110 as indicated in the state diagram

[@sadaqataliofficial8622]

001 k bad 000 hii ay ga in down counter

[@nipundahiya9705]

@@sadaqataliofficial8622how??

[@itZ_meayus876]

​@@sadaqataliofficial8622explain kar de bhai phele down count hua then kyu fir se up count hua

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WONDERFUL explanation sir! 👍

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Very nice explanation, thank you so much 😊

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[@VAISHNADEVIGECEUG-]

GREAT EXPLANATION SIR

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[@daisykaur7402]

Your videos are very good and informative, sir when u make k map how to take lsb and msb I think mq2 should be down and q1q2 should be up in t2 kmap see and same in t1 also and also when we make circuit we can use xor gate instead of and, or gate as q0m'+m'q0 are xor output sir please tell your videos are awesome

[@EngineeringFunda]

It is perfectly correct here

[@yashkataria2992]

@daisy kaur there will be no change in answer even from your method answer will be same

[@Venkateswarlu384]

Sir please upload the videos on the subject " ELECTRONIC CIRCUIT ANALYSIS "

[@hibakhan9764]

thank you so much !

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Thank you so much sir

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Sir,literally you saved my semester.

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Your positive comments motivates me. Teachers like me just wants positive comment from student. Love from you guys means a lot to me. My goal is to create largest community of engineers in entire globe. Please help me by sharing this playlist with your friends.

[@takefocus2313]

If we simplify T1 and T2. Boolean expr. We write T2=m Xor(gate) Q1.Q2..and similarly T1 and final we draw C.Diagram on basis of Xor gate Yes or No Sir..

[@yashkataria2992]

Sir for T1 can we use Ex-or gate And for T2 can we use And gate and Ex-or gate

[@VeeraBabu-xi6tl]

Shall we give T2 as Q0 and m to Xor gate sir?

[@venkatsairam2676]

Thank u so much sir

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Your positive comments motivates me. Teachers like me just wants positive comment from student. Love from you guys means a lot to me. My goal is to create largest community of engineers in entire globe. Please help me by sharing this playlist with your friends.

[@Md.Rizwan.Molla2005]

sir, will there be any problem if we use xor gate in the circuit?? because you didn't use the xor gate.

[@claude-reneembamy8719]

Hello, please I would to know why at @6:53 after 111 for m =1 we start back to zero, are not supposed to continue to 6 and then 5...etc. that is 111, 110, 101.... since we are down counting?

[@claude-reneembamy8719]

oh actually I understood, it is relative to the previous state lol.

[@reshinmk2076]

@@claude-reneembamy8719 thanks bro.

[@ojaspatil2094]

@@claude-reneembamy8719 thank you so much

[@hetpatel3023]

love the way teach

[@hetpatel3023]

just wanna add one thing Instead of using AND and OR can we use XOR?

[@EngineeringFunda]

If XOR is there in boolean function then only we can use it.

[@adhya2508]

What if we take m=0 as downcounter?? Is that convention alright????

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❤❤❤❤❤

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Your Appreciations, care and share matters a lot to me. #EnginneringLove. All the subjects playlist of Engineering Funda is available in comment section. Share it with your friends to support us. Your positive comments motivates me and person like me get boosted by my students feedback. Thanks and welcome 🙏

[@swagatshatabdi]

I'm binge-watching this playlist now, sir, I've got a question why are we using +ve edge clock pulse in synchronous counter whereas -ve edge clock pulse in asynchronous counter? and is there any rule to use a specific clock signal for various counters? please answer sir...🙏😓

[@EngineeringFunda]

I dont this rules. You can use positive or negative edge trigger clock in both circuits.

[@swagatshatabdi]

@@EngineeringFunda thanks for replying sir🙏, loved this playlist and I learnt a lot 😍🥰

[@Gopinath-xj2by]

Sir, In karnaugh map if interchange positions of mq2q1q0 answer will be different...

[@explainit-k14]

Yes. I have taken Up inputs Qa and Qb and down inputs Qc and M

[@abhiseksah66]

Why is that when writing the bits for down counting, you move from 111 to 000 and not 111 to 110 as indicated in the state diagram Is it mistake??

[@EngineeringFunda]

no .. i have written things in sequence, so that you can understand k map solution easily

[@TusharKumar-iu4nt]

Sir for T1 why can't we just go with xor operation of Q0 and m?

[@brijbihariaggarwal947]

same question sir

[@alexanderin2005]

is the down counting sequence wrong in state table? it contradicts with the state diagram.

[@EngineeringFunda]

How? ..... see the state diagram again

[@lucyabrahamthomas8379]

@6:20 is it possible to start from 111 in case of m=1?

[@EngineeringFunda]

Possible but for that again we need to make state table and state diagram. Then we can solve circuit bu Boolean expressions.

[@mohammadsubhan5182]

M=1 is opposite of m=0,then how can it be same after 10 value

[@Hayat26474]

Same question

[@Tayib1]

Sir can u again explain Down counter iam not getting accordingly to which u have explained with state diagram.

[@EngineeringFunda]

If you take outputs from Qbar, it will be down counter.

[@prekshasalvi8622]

Sir instead of using and or gate , can't we used directly exor gate ????

[@EngineeringFunda]

U can

[@prekshasalvi8622]

@@EngineeringFunda ok sir thankyou

[@swarnavamukherjee7629]

Sir can you please explain the waveform diagram for the up/down synchronous counter in my college they did it but I didn't get it Sir please help❤

[@EngineeringFunda]

Plot 1 and 0s with clock

[@swarnavamukherjee7629]

@@EngineeringFunda ok Sir thanks Sir

[@santoshkumarnayak5811]

Sir i am unable to understand the truth table of t1 and t2

[@explainit-k14]

For T1 compare input of Q1 and Q1+ if it is 00 or 11 then output 0 else for 01 or 10 output 1. Similarly for T2 compare inputs of Q2 and Q2+ if 00 or 11 output is 0 else 01 or 10 output is 1

[@shubhammahalle7489]

Plz anyone explain me how to write kmap values.9:25

[@explainit-k14]

Take 4 variable k map. With up inputs Qa Qb and down inputs Qc and M. Put the 1 values in separately for T2 and T1 Kmap and solve the Boolean equation for T2 and T1. T2 values are €m ( 3,7,8,12) T1 values are €m (1,3,5,7,8,10,12,14) T1 = 1 as all inputs are 1.

[@amanshah1995]

sir i didnt understood down counter can you pls explain ?? it should be 7,6,5,4.... but you wrote 7,1,2,3,4...

[@mdhasnain_3764]

same doubt?

[@varsha-cq3vy]

How to make 3 bit synchronous up counter using T flip flop

[@venkyg6745]

3 bit ripped,up/ down counter sir.

[@i_sp1174]

After Almost completing this playlist I can see how incompetent most of the phd professors are, and Why students cant pass without too much self study

[@radm8272]

Is d flip flop and t flip flop the same sir

[@EngineeringFunda]

Nope it is very different

[@explainit-k14]

D flip flop is a Data flip flop. Output follows the input which can be made by JK or SK by connecting a NOT gate. T flip flop is a Toggle flip flop. It toggles the output when T= 1 or memory state when 0. This can be made by JK by shorting both the terminals.

[@rz9196]

Why is it counting up in a table and again counting up rather than down?

[@imad584]

Same issue

[@explainit-k14]

It is not. 0-7 is count up. 8-15 is count down. If you see properly 000 output is 001 and 111 output is 111 when M=0 is up counter. (0 to 7) Whereas 000 outputs is 111 and 111 output is 001 when M=1 is down counter (7 to 0)

[@furkanalikhan9508]

In down state table why you moved from 111 to ooo u have to move to 110

[@imad584]

Same issue

[@explainit-k14]

You have to not Down move blindly. You have to look in the state diagram you have made and only as per that you have to move to the next state. According to the State table for 000 the next state is 111. For 001 the next state is 000. For 010 the next state is 001. For 011 next state is 101. For 100 next state is 011. For 101 next state is 100. For 110 next state is 101. For 111 the next state is 110. like wise you move down

[@EngineeringFunda]

Just written state diagram.

[@user-ch9ep2we7h]

​@@explainit-k14thank you ❤

[@guruprasadgiri3640]

Sir send some pdf in all chapter wise

[@EngineeringFunda]

It can be accessed from my Android Application Engineering Funda

[@GGARIN.C.R]

Bhai faltu ki tarif ki jagah sir se puchlo ki 111 down ke baad 110 kyu nahi aayaulta 000 aya

[@EngineeringFunda]

See the state diagram dear. It is simply written from state diagram.