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Digital Pulse Counter - Single Digit - Using Seven Segment LED, IC 4026 and Timer 555

  PRO116
.
In this project you will get experience with using seven segment LED display and Counter and display decoder. The project uses a single common cathode 7 segment display that will display the count up to 9. The IC used for counting is IC 4026 which also comes with display driver. The IC counts the pulses and converts that to a decimal number up to 9 and supplies power to the appropriate segments of the display to show the current count. when the count reaches 9 it will be reset back to zero and continues again.

Pulses used for counting can be manually supplied by touching the +ve and -ve terminals or can be fed from any other source. In this project we use a 555 timer to feed the pulses. See project (click here) for another simple project where 555 is used.

Below is the circuit used to build the counter.


The below photos give the assembly of the counter on breadboard.

Link to You Tube Tutorial



List of parts used in the project
Ref Part type Part Name Value Count Info
 7 Seg1DISPLAYSeven Segment Display 14 mm--1 See Picture
 Bat1BATTERYPACKBattery Pack 6V AA--1 See Picture
 C1ELECCAPACITORElectrolytic Capacitor 10uF10uF1 See Picture
 IC1ICIC NE555NE5551 See Picture
 IC2ICIC 40264026IC1 See Picture
 R1RESISTORResistor 10K10K1 See Picture
 R2POTPot Meter 100K100K1 See Picture


Approximate cost for building this project is Rs 121.00


Note: In addition to the above components you may also require a breadboard and power supply / batteries for building this project.


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Posts from the Users
Posted by: Soundarya Ts
Date: 2016-10-09 14:09:00
Type: Question
can I replace the IC4026 with IC4017?
Posted by: Soundarya Ts
Date: 2016-10-09 14:07:55
Type: Question
can I replace the IC4026 with IC4017?
Posted by: Akshay Kk
Date: 2016-05-11 13:42:49
Type: Question
can we replace the IC 4026 with any other , also the volt of capacitor
Posted by: Manish Sharma
Date: 2016-03-06 15:18:15
Type: Comment
ThankQ.................................................................................................................................................................................................................................................Friend
Posted by: Pratik Chhapolika
Date: 2014-05-11 19:58:18
Type: Question
We want to use this circuit to count number of person entering in room through IR sensor. Can we do it? How??
Posted by: John Bautista
Date: 2013-08-02 14:36:40
Type: Comment
hey! can i use IC4511 instead of IC 4026?
Posted by: Bisma Khan
Date: 2012-11-18 19:43:34
Type: Question
Question what are the application of digital pulse counter?
Posted by: Rahul Mohan
Date: 2012-10-31 21:52:52
Type: Question
17:13:51 Type: Question what are the application of digital pulse counter???
Posted by: Fisch Michel
Date: 2012-10-08 04:11:08
Type: Question
Hey I am using a green LED 7 Segment Display but the circuit does not work correctly.Missing two numbers and the rest of the numbers are not complet,missing one or two digits! Thank You for your help
Posted by: Reuben Muniko
Date: 2012-09-26 19:58:29
Type: Comment
SEND ME A DIAGRAM OF 0-108MHZ COUNTER
Posted by: Reuben Muniko
Date: 2012-09-26 19:58:26
Type: Comment
SEND ME A DIAGRAM OF 0-108MHZ COUNTER
Posted by: Reuben Muniko
Date: 2012-09-26 19:58:24
Type: Comment
SEND ME A DIAGRAM OF 0-108MHZ COUNTER
Posted by: Reuben Muniko
Date: 2012-09-26 19:58:21
Type: Comment
SEND ME A DIAGRAM OF 0-108MHZ COUNTER
Posted by: Reuben Muniko
Date: 2012-09-26 19:58:15
Type: Comment
SEND ME A DIAGRAM OF 0-108MHZ COUNTER
Posted by: Saranya Krish
Date: 2012-09-18 18:22:19
Type: Comment
how to make down counter
Posted by: Patel Khooshbu
Date: 2012-09-12 17:13:51
Type: Question
what are the application,working and uses of this project?
Posted by: Akash Dumbre
Date: 2012-09-12 15:33:53
Type: Comment
sir what is the working of this project.
Posted by: Patel Khooshbu
Date: 2012-09-11 14:42:02
Type: Question
what is the working, application n uses of digital pulse counter?....?
Posted by: Chingtony Mbuma
Date: 2012-08-11 05:18:41
Type: Comment
thank u sir i think i can do it alone now!
Posted by: Hitnsy N
Date: 2012-08-01 18:33:18
Type: Question
Is the 7 segment led common anode or cathode??
Posted by: Darsini Rao
Date: 2012-07-28 22:13:07
Type: Comment
can i get the details about the project?? i also wants to know more details about the project, the purpose n the uses.. please.. urgently needed.. pls sent me the full details to my email: darsinirao@gmail.com
Posted by: Sarath Kesav
Date: 2012-06-15 15:17:41
Type: Comment
Hello sir, In this circuit using single digit display unit,in which circuit what are the modification need from single digit display to tripple digit display??
Posted by: Khahish Suneja
Date: 2012-04-28 10:41:39
Type: Question
plzzz explain the working
Posted by: Aloke Hazra
Date: 2012-03-10 22:27:38
Type: Question
what is the use of 555
Posted by: Renveer Ar
Date: 2012-02-14 17:18:21
Type: Question
can u tell some ways to make siren sound circuits without using ic UM3561
Posted by: Nix Coxon
Date: 2012-01-15 06:03:08
Type: Question
why my counter count too fast?and when i pull off the jumper 3 from ne555 it doesn't stop.please help me
Posted by: Nix Coxon
Date: 2012-01-15 05:34:07
Type: Comment
can i use this with 5v?
Posted by: Chandra Sekhar
Date: 2011-12-04 12:03:53
Type: Comment
please tell me the ic 4026 purpose and application of digital pulse counter pleaase .............. because its my mini project
Posted by: Shivayogi Abbigeri
Date: 2011-12-03 10:55:07
Type: Comment
Respected Sir/Mam, I want Digital Pulse Counter - Single Digit Who To Buy it My addres as follow please consider my request. Thank You, Mr. Shivayogi G Abbigeri Syscom Computer Sri Sai Dhama Complex, Corp Bank Building, Dam road, Hospet,-583201, Karnataka Cell: 9880621259
Posted by: Bilal Aslam
Date: 2011-11-30 23:27:55
Type: Question
hi! i just made this circuit but i used common anode instead of cathode but used Vcc instead of ground...so thats good..but the problem is that my 7 segment display is counting but not giving full digits and missing 1 or 2 LEDs in every digit......can you help me out on this one...i made the whole circuit right ....as it is ..plz reply soon
Posted by: Anis Zawani
Date: 2011-11-06 13:23:59
Type: Comment
why the schematic is not same as the circuit on the breadboard????
Posted by: Francis Manlapaz
Date: 2011-10-11 23:19:06
Type: Comment
hi can you provide a truth table for this project? really appreciate it if you do.. thanks a lot.. God Bless..
Posted by: Yash Tilvawala
Date: 2011-10-11 21:22:48
Type: Comment
plz,tell me about the application of this projects!!!!!!!
Posted by: Amir Khan
Date: 2011-06-07 23:21:26
Type: Question
assalamualaikum! if ic 4026 is rare not found then what next option??? i mean is there any equivalent ic that which can be use instead of ic 4026???? plzz guide me because my project is pending due to ic4026
Posted by: Anonymous
Date: 2011-03-30 01:11:53
Type: Comment
thank a lot
Posted by: Anonymous
Date: 2011-03-22 14:21:51
Type: Suggestion
What if no IC4026 what other option of Example of IC?
Posted by: Anonymous
Date: 2011-02-23 10:12:48
Type: Comment
thnkzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzz...........wat a great project.......coooooool>>>>. ranith k nair
Posted by: Anonymous
Date: 2011-02-16 18:57:12
Type: Question
what if I will replace the IC 4026 in to a different IC, will it still work??
Posted by: Anonymous
Date: 2010-12-22 10:44:06
Type: Comment
thanx dis helped me a lot
Posted by: Anonymous
Date: 2010-11-11 22:05:11
Type: Comment
BORI DEN APO BONDO AE KAKI 1 IC 4026 NI
Posted by: Anonymous
Date: 2010-10-11 16:42:20
Type: Comment
Thanks a lot..now I can start my project..:)
Posted by: Anonymous
Date: 2010-10-11 16:37:48
Type: Comment
Thanks a lot..now I can start my project..:)
Posted by: Anonymous
Date: 2010-10-10 19:50:08
Type: Comment
IC 4033 is a direct substitution for 4026. Other option is to have a seperate counter and driver. e. g. counters 4029,4510,4518 can be used with driver 4511. Counters output four bit count which can be directly fed to the 7 segment driver.
Posted by: Anonymous
Date: 2010-10-10 11:20:25
Type: Question
Is there any IC substitution if IC 4026 is unavailable?
Posted by: Anonymous
Date: 2010-10-10 11:02:14
Type: Comment
what other IC can I use if IC 4026 is not available?
Posted by: Anonymous
Date: 2010-10-10 06:39:32
Type: Comment
you can have a switch between NE555 pin 3 and and 4026 pin 1. or you can have the pulses coming from a switch. you need to debounce the switch to ensure only one pulse come at a time.
Posted by: Anonymous
Date: 2010-10-09 17:22:31
Type: Comment
does this have a switch?
Posted by: Anonymous
Date: 2010-07-13 02:42:33
Type: Suggestion
i want to do project on electronics for main project
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