What is Logic gates ?

LOGIC GATES

“Gate is electric circuit in which any signal gone or stopped itself its called Logic Gates.”

LOGIC GATES are three types-

1. AND GATE

2. OR GATE

3. NOR GATE

1. AND GATE :-

“An AND GATE has two or more inputs and only one output.”

Where the output Y is in logic 1 State, when both input A and B are in logic state.(logic gates)

BOOLEAN OPERATION:-

Y = a.b

LOGIC SYMBOL :-

SWITCHING CIRCUIT :-

Switching circuit of AND gate

WORKING :-

1. If A = 0 and B = 0 then no any current flow in electric circuit so bulb will not burn.

Y = 0.

2. If A = 1 and B = 0 then no any current flow in electric circuit so bulb will not burn.

Y = 0.

3. If A= 0 and B = 1 then no any current flow in electric circuit so bulb will not burn.

Y = 0.

4. If A = 1 and B = 1 then slow current in electric circuit A and B so bulb will burn.

hence Y = 1.

TRUTH TABLE :-

AND GATE FIND BY USING DIODE :-

 

1ST CONDITION :-

If A and B both are connected to earth E ( A = 0 , B = 0 ) , Then diode D1 and D2 both are being forward bias, hence both diode will worked.

But in this condition used ideal diode in which diode point do not first potential loss,
so output

Y = 0.

2ND CONDITION :-

If A connect to S and B connect to Earth (B = 0) , Then diode D2 will forward bias and D1 will reverse bias so D2 will work ,

But D2 is ideal diode

so Y = 0 .

3RD CONDITION :-

If A connect to earth and B connect to S then in the same way output of second condition.

Y = 0.

4TH CONDITION :-

If A and B both are connect to S then diode A and B both are reverse bias, so both diode will not working .

But battery Vcc to found the potential difference 5V , 5C

Y = 0 .

AND GATE FIND BY USING TRANSISTOR :-

As mentioned earlier, we can also simulated the AND Gate operation by using resistors and transistor.

This is known as resistor transistor logic or RTL.

1. A = 0 , B = 0 transistor Q1 and Q2 will not conduct making Ic = 0 voltage at P i.e Vc equal Vcc base of Q3 gets necessary forward bias.

Hence Y = 0 .

2. A = 0 , B = 0 or B = 0 , A = 0. in both the cases Q1 and Q2 cannot conduct.

Hence Y = 0.

3. A = 0 , B = 0 . in this case Q1 and Q2 conduct voltage at P which is Vc , therefore goes down and becomes 0.2v .

Due to this Q3 does not get necessary forward bias.

Hence Q3 does not conduct naturally its collector voltage Vcc = 5V becomes

Y = 0 .

2. OR GATE :-

“An OR GATE has two or more inputs and only one output.”

The OR GATE is an electronic circuit , in which the output (Y) is in logic 1 state.(logic gates)

When any one or both the inputs are in logic 1 state otherwise output find in logic state 0 .

BOOLEAN EQUATION :-

Y = a + b

LOGIC SYMBOL :-

SWITCHING CIRCUIT :-

WORKING :-

1. If A= = 0 and B = 0 then no any current flow in electric circuit so Lamp L will not born.

Y = 0.

2. If A= 0 and B = 1 then flow current in electric circuit B so lamp L will Burn.

Y = 1 .

3. If A = 1 and B = 0 , then flow current in electric circuit A so lamp L will Barn.

Y = 1

4. If A = 1 and B = 1 , then flow current in electric circuit A and B so lamp will Burn.

Y = 0

TRUTH TABLE :-

OR GATE FIND P-N JUNCTION DIODE :-

Above the diagram show the diode electronic circuit OR gate. In the OR gate are two input signal so two diodes D1 and D2 set in parallel combination Y is output signal.

1ST CONDITION :-

If A and B both are connect to E then both diode become reverse bias , so both diode A and B not working.

Therefore 5K-ohm load in find no any potential difference .

Then Y = 0.

2ND CONDITION :-

If A connect to S and B connect E ( means A=1 , B = 1) then diode D1 will forward bias and diode D2 will reverse bias .

So D1 will work, therefore find potential difference between two point of load 5K-ohm, so

Y = 0.

3RD CONDITION :-

If A connect to E and B connect to S (means A = 0 , B = 1 ) then diode D2 will forward bias and diode D1 reverse bias ,

then D2 will working therefore find potential difference between two point of load 5k-ohm.

Hence Y= 0.

4TH CONDITION :-

If A and B both are connect to S then D1 and D2 both are forward bias so find output.

Y = 1.

OR GATE FIND BY USING TRANSISTOR :-

3. NOT GATE :-

“A NOT GATE has only one Input and one output.”

its counterpart in Boolean Algebra is known as not operation.

The NOT GATE is also called as an inverter, because it only inverts the input.

BOOLEAN EQUATION :-

Y = A

LOGIC SYMBOL :-

SWITCHING CIRCUIT :-

WORKING :-

1. If A=1 , then in the circuit flow current so bulb not burn.

Y= 0.

2. If A = 0 , then the circuit flow current so bulb will burn.

Y = 0.

TRUTH TABLE :-

NOT GET BY USING A TRANSISTOR IN CE MODE :-

1ST CONDITION :-

When A = 0 connect to E (A= 0 ) , then the transistor in Reverse bias and will not conduct.

Therefore Vc = Ccc =+5V.

Y = 1.

2ND CONDITION :-

Similarly when (A = 1) connect to S the transistor will get necessary forward bias and will conduct having .

Hence Vc = 0.2 V which mean

Y = 0.

TIMING DIAGRAM :-

women empowerment:-

Democratic Decentralization:-

Computer :-

What is the OP AMP ?

 

Author: educationallof

103 thoughts on “What is Logic gates ?

  1. I just like the valuable info you supply for your articles. I’ll bookmark your weblog and check again here frequently. I’m slightly certain I will learn a lot of new stuff proper here! Good luck for the next!

  2. Magnificent website. Lots of helpful info here. I’m sending it to several pals ans additionally sharing in delicious. And certainly, thanks for your effort!

  3. I wish to express some appreciation to the writer for rescuing me from this condition. After researching throughout the internet and getting proposals which were not pleasant, I assumed my life was over. Existing devoid of the approaches to the issues you have fixed all through the posting is a crucial case, and the kind that could have negatively damaged my entire career if I hadn’t come across your web page. Your good knowledge and kindness in touching a lot of things was useful. I don’t know what I would’ve done if I had not discovered such a step like this. I can now look forward to my future. Thanks so much for the reliable and sensible help. I won’t hesitate to endorse your web page to anyone who needs and wants guide on this area.

  4. I am not sure where you’re getting your information, but great topic. I needs to spend some time learning much more or understanding more. Thanks for magnificent info I was looking for this info for my mission.

  5. Thank you for another excellent post. The place else may anyone get that kind of information in such a perfect manner of writing? I’ve a presentation subsequent week, and I am on the look for such info.

  6. Great work! This is the type of info that should be shared around the web. Shame on the search engines for not positioning this post higher! Come on over and visit my web site . Thanks =)

  7. Excellent post. I was checking constantly this blog and I’m impressed! Very helpful info particularly the last part 🙂 I care for such information a lot. I was seeking this certain info for a very long time. Thank you and good luck.

  8. Nice post. I was checking constantly this blog and I’m impressed! Very helpful information particularly the last part 🙂 I care for such info a lot. I was looking for this particular info for a long time. Thank you and good luck.

  9. Hey there! This is my first comment here so I just wanted to give a quick shout out and tell you I genuinely enjoy reading through your posts. Can you suggest any other blogs/websites/forums that go over the same topics? Thanks a lot!

  10. Thank you for sharing superb informations. Your web site is so cool. I’m impressed by the details that you?¦ve on this web site. It reveals how nicely you perceive this subject. Bookmarked this web page, will come back for extra articles. You, my pal, ROCK! I found just the information I already searched everywhere and simply could not come across. What a great website.

  11. Thank you for another magnificent post. The place else may just anyone get that kind of information in such a perfect way of writing? I’ve a presentation subsequent week, and I am at the search for such information.

  12. Excellent website. Lots of useful information here. I’m sending it to some pals ans also sharing in delicious. And obviously, thanks for your sweat!

  13. I?¦ve recently started a website, the info you offer on this site has helped me tremendously. Thank you for all of your time & work.

  14. Nice post. I was checking constantly this blog and I am impressed! Extremely helpful information specially the last part 🙂 I care for such information much. I was seeking this particular information for a long time. Thank you and best of luck.

  15. I intended to create you that very small remark to finally thank you very much over again considering the pleasant guidelines you’ve shared on this site. It is certainly open-handed of you to make unreservedly precisely what most people would have offered for sale as an electronic book to help make some cash for their own end, specifically since you might have tried it in case you considered necessary. Those points also served to become a great way to comprehend someone else have a similar desire similar to my own to find out way more concerning this condition. I know there are many more pleasurable moments ahead for folks who start reading your website.

  16. Everything is very open and very clear explanation of issues. was truly information. Your website is very useful. Thanks for sharing.

  17. I wish to express some thanks to this writer just for bailing me out of this scenario. Because of looking out throughout the internet and getting things which are not beneficial, I assumed my entire life was well over. Living without the presence of answers to the issues you have fixed as a result of your article is a serious case, as well as ones which could have in a negative way affected my entire career if I had not encountered your web site. Your actual mastery and kindness in dealing with all the things was crucial. I am not sure what I would have done if I hadn’t come upon such a stuff like this. I can now look forward to my future. Thanks a lot so much for this specialized and result oriented guide. I will not be reluctant to propose your web site to anybody who needs and wants tips on this subject.

  18. I’d need to examine with you here. Which is not something I normally do! I enjoy studying a publish that can make individuals think. Additionally, thanks for allowing me to comment!

  19. I have recently started a web site, the info you offer on this website has helped me greatly. Thank you for all of your time & work. “Character is much easier kept than recovered.” by Thomas Paine.

  20. I am often to blogging and i really appreciate your content. The article has really peaks my interest. I am going to bookmark your site and keep checking for new information.

  21. Hello very nice web site!! Man .. Excellent .. Wonderful .. I will bookmark your blog and take the feeds additionallyKI am satisfied to find a lot of useful info right here in the submit, we need work out extra techniques on this regard, thank you for sharing. . . . . .

  22. Hey there! This post could not be written any better! Reading through this post reminds me of my good old room mate! He always kept chatting about this. I will forward this article to him. Fairly certain he will have a good read. Thank you for sharing!

  23. Hi there very cool web site!! Guy .. Beautiful .. Amazing .. I’ll bookmark your website and take the feeds alsoKI am glad to seek out a lot of helpful information here in the publish, we’d like work out extra techniques in this regard, thank you for sharing. . . . . .

  24. hello there and thanks for your info – I have certainly picked up something new from proper here. I did alternatively experience some technical issues using this web site, since I skilled to reload the site a lot of instances prior to I may just get it to load properly. I had been thinking about if your hosting is OK? No longer that I’m complaining, but slow loading instances times will often affect your placement in google and could damage your quality rating if advertising and ***********|advertising|advertising|advertising and *********** with Adwords. Anyway I’m adding this RSS to my e-mail and could glance out for much extra of your respective fascinating content. Ensure that you replace this once more soon..

  25. I’m no longer sure the place you’re getting your info, but great topic. I needs to spend a while studying much more or understanding more. Thanks for wonderful information I used to be on the lookout for this information for my mission.

  26. F*ckin’ tremendous things here. I’m very glad to see your post. Thanks a lot and i’m looking forward to contact you. Will you kindly drop me a e-mail?

  27. Hiya, I’m really glad I have found this info. Today bloggers publish only about gossips and net and this is actually frustrating. A good website with interesting content, this is what I need. Thanks for keeping this web site, I’ll be visiting it. Do you do newsletters? Can’t find it.

  28. Thank you for the sensible critique. Me and my neighbor were just preparing to do some research about this. We got a grab a book from our local library but I think I learned more clear from this post. I’m very glad to see such excellent information being shared freely out there.

  29. Hiya, I’m really glad I have found this information. Today bloggers publish only about gossips and net and this is really frustrating. A good website with interesting content, that’s what I need. Thanks for keeping this web site, I’ll be visiting it. Do you do newsletters? Can not find it.

  30. Hello there! Do you know if they make any plugins to assist with SEO? I’m trying to get my blog to rank for some targeted keywords but I’m not seeing very good results. If you know of any please share. Cheers!

  31. I was very pleased to find this web-site.I wanted to thanks for your time for this wonderful read!! I definitely enjoying every little bit of it and I have you bookmarked to check out new stuff you blog post.

  32. I discovered your blog site on google and check a few of your early posts. Continue to keep up the very good operate. I just additional up your RSS feed to my MSN News Reader. Seeking forward to reading more from you later on!…

  33. I am also writing to make you understand of the amazing experience my cousin’s child gained studying the blog. She picked up plenty of details, which include what it is like to have a very effective coaching nature to get the rest without difficulty have an understanding of specified tortuous topics. You really exceeded my desires. Thank you for imparting the good, trusted, educational as well as fun tips about your topic to Evelyn.

  34. I do love the manner in which you have presented this challenge plus it does indeed supply us a lot of fodder for consideration. Nevertheless, from everything that I have observed, I basically hope as the actual reviews pile on that men and women stay on issue and don’t get started upon a soap box involving the news du jour. All the same, thank you for this outstanding point and although I do not really go along with this in totality, I respect your perspective.

  35. It¦s actually a great and useful piece of information. I¦m happy that you just shared this useful information with us. Please keep us informed like this. Thank you for sharing.

  36. Just want to say your article is as surprising. The clearness in your post is simply great and i could suppose you are knowledgeable in this subject. Well with your permission let me to take hold of your RSS feed to keep updated with drawing close post. Thanks 1,000,000 and please carry on the rewarding work.

  37. I’ve been absent for some time, but now I remember why I used to love this website. Thanks , I¦ll try and check back more often. How frequently you update your website?

  38. I’ve recently started a blog, the info you offer on this website has helped me tremendously. Thanks for all of your time & work.

  39. I do enjoy the manner in which you have presented this specific problem and it really does provide me personally some fodder for thought. However, coming from everything that I have experienced, I basically hope as the actual remarks pile on that folks continue to be on point and in no way get started on a soap box regarding some other news du jour. Yet, thank you for this excellent piece and although I do not necessarily agree with it in totality, I respect your viewpoint.

  40. I not to mention my buddies came checking out the great tips and tricks on your website and then came up with a terrible feeling I had not expressed respect to the website owner for those techniques. Those young men happened to be for this reason very interested to read them and have now in fact been using those things. Appreciation for being very helpful and also for finding varieties of remarkable information millions of individuals are really desperate to understand about. My personal sincere apologies for not saying thanks to sooner.

  41. Thank you for sharing excellent informations. Your site is so cool. I am impressed by the details that you’ve on this site. It reveals how nicely you understand this subject. Bookmarked this web page, will come back for extra articles. You, my friend, ROCK! I found simply the info I already searched everywhere and simply could not come across. What a great website.

  42. I do agree with all the ideas you’ve presented in your post. They’re really convincing and will certainly work. Still, the posts are too short for beginners. Could you please extend them a bit from next time? Thanks for the post.

  43. Spot on with this write-up, I really assume this web site wants far more consideration. I’ll probably be again to learn rather more, thanks for that info.

  44. I’m not that much of a internet reader to be honest but your blogs really nice, keep it up! I’ll go ahead and bookmark your website to come back in the future. Many thanks

  45. Excellent post. I was checking constantly this blog and I’m impressed! Extremely helpful info specifically the last part 🙂 I care for such info a lot. I was looking for this particular info for a very long time. Thank you and best of luck.

  46. Hello There. I discovered your blog using msn. That is an extremely well written article. I’ll make sure to bookmark it and return to read more of your useful info. Thank you for the post. I’ll definitely comeback.

  47. It’s truly a great and useful piece of info. I am glad that you shared this helpful info with us. Please keep us up to date like this. Thank you for sharing.

  48. F*ckin’ awesome things here. I am very satisfied to see your article. Thank you so much and i’m having a look forward to contact you. Will you please drop me a e-mail?

  49. Thanks so much for providing individuals with remarkably superb chance to read articles and blog posts from this blog. It’s usually so excellent plus packed with fun for me personally and my office peers to visit the blog on the least 3 times every week to learn the fresh tips you have got. And lastly, I am always astounded considering the unbelievable ideas you serve. Some 3 points in this posting are really the most effective we have all had.

  50. It¦s actually a great and helpful piece of info. I¦m happy that you just shared this useful information with us. Please keep us informed like this. Thanks for sharing.

  51. I am typically to running a blog and i actually respect your content. The article has really peaks my interest. I’m going to bookmark your site and maintain checking for new information.

  52. Thank you a lot for sharing this with all folks you actually know what you’re talking approximately! Bookmarked. Kindly additionally consult with my website =). We could have a hyperlink trade agreement among us!

  53. I’ve recently started a blog, the info you offer on this web site has helped me greatly. Thanks for all of your time & work.

  54. F*ckin’ amazing issues here. I am very glad to see your post. Thank you so much and i am taking a look forward to contact you. Will you kindly drop me a mail?

  55. I am often to blogging and i really appreciate your content. The article has really peaks my interest. I am going to bookmark your site and keep checking for new information.

  56. I wanted to thank you for this great read!! I definitely enjoying every little bit of it I have you bookmarked to check out new stuff you post…

  57. I truly appreciate this post. I have been looking everywhere for this! Thank goodness I found it on Bing. You’ve made my day! Thank you again!

  58. I’m no longer sure the place you’re getting your information, however great topic. I must spend a while finding out more or understanding more. Thanks for fantastic info I was on the lookout for this information for my mission.

  59. Thanks for sharing superb informations. Your website is very cool. I’m impressed by the details that you have on this blog. It reveals how nicely you perceive this subject. Bookmarked this website page, will come back for extra articles. You, my pal, ROCK! I found simply the information I already searched all over the place and simply couldn’t come across. What a great site.

  60. I truly appreciate this post. I?¦ve been looking all over for this! Thank goodness I found it on Bing. You have made my day! Thank you again

  61. Thanks a bunch for sharing this with all of us you actually know what you are talking about! Bookmarked. Kindly also visit my website =). We could have a link exchange contract between us!

  62. F*ckin’ remarkable issues here. I’m very satisfied to peer your article. Thank you a lot and i’m having a look forward to contact you. Will you please drop me a mail?

  63. I am not certain where you’re getting your info, however good topic. I must spend some time learning more or working out more. Thank you for excellent info I used to be searching for this information for my mission.

  64. Spot on with this write-up, I truly assume this web site needs far more consideration. I’ll in all probability be once more to learn much more, thanks for that info.

  65. It is really a great and helpful piece of info. I’m glad that you shared this helpful information with us. Please keep us up to date like this. Thanks for sharing.

  66. Very nice info and right to the point. I am not sure if this is really the best place to ask but do you folks have any ideea where to employ some professional writers? Thanks 🙂

  67. Thanks a lot for giving everyone such a superb opportunity to read critical reviews from this web site. It is usually so superb plus full of a good time for me and my office co-workers to search your blog at minimum 3 times in a week to study the latest guidance you will have. Of course, I’m also actually fulfilled with all the wonderful things you serve. Some 4 points in this posting are completely the most effective I’ve had.

  68. I’d have to examine with you here. Which is not one thing I usually do! I take pleasure in reading a post that may make folks think. Additionally, thanks for permitting me to comment!

  69. Excellent website. A lot of useful info here. I am sending it to several buddies ans additionally sharing in delicious. And naturally, thank you to your effort!

  70. Do you mind if I quote a couple of your posts as long as I provide credit and sources back to your website? My blog site is in the exact same niche as yours and my users would really benefit from some of the information you present here. Please let me know if this ok with you. Thanks a lot!

  71. I am often to blogging and i really appreciate your content. The article has really peaks my interest. I am going to bookmark your site and keep checking for new information.

  72. Thank you for the sensible critique. Me and my neighbor were just preparing to do some research on this. We got a grab a book from our area library but I think I learned more from this post. I am very glad to see such wonderful information being shared freely out there.

  73. Hello very cool site!! Guy .. Excellent .. Superb .. I will bookmark your web site and take the feeds additionallyKI’m satisfied to find so many useful information right here within the post, we’d like work out extra strategies on this regard, thanks for sharing. . . . . .

  74. Excellent site. Lots of helpful information here. I am sending it to some pals ans additionally sharing in delicious. And obviously, thanks for your effort!

  75. I simply needed to thank you so much all over again. I do not know the things that I might have handled without those basics contributed by you regarding my concern. It had been a terrifying issue in my circumstances, but considering a well-written style you handled that took me to cry with delight. I’m grateful for your advice and thus hope that you realize what a powerful job you were putting in teaching people using your web page. More than likely you’ve never got to know any of us.

  76. Thank you for any other magnificent article. Where else may anyone get that kind of info in such an ideal approach of writing? I’ve a presentation subsequent week, and I am on the look for such info.

  77. Hey very nice site!! Guy .. Excellent .. Wonderful .. I’ll bookmark your web site and take the feeds additionallyKI’m happy to find numerous useful info here in the put up, we need work out extra strategies in this regard, thanks for sharing. . . . . .

  78. Thank you for the sensible critique. Me and my neighbor were just preparing to do a little research on this. We got a grab a book from our area library but I think I learned more clear from this post. I’m very glad to see such fantastic information being shared freely out there.

  79. Thank you for sharing excellent informations. Your web-site is so cool. I’m impressed by the details that you’ve on this blog. It reveals how nicely you perceive this subject. Bookmarked this website page, will come back for extra articles. You, my pal, ROCK! I found simply the info I already searched everywhere and simply could not come across. What a perfect site.

  80. Heya i am for the primary time here. I came across this board and I to find It really helpful & it helped me out much. I hope to present one thing again and help others such as you helped me.

  81. This is really interesting, You’re a very skilled blogger. I’ve joined your feed and look forward to seeking more of your fantastic post. Also, I have shared your site in my social networks!

Comments are closed.

error: Content is protected !!
Exit mobile version