4033 7 Segment Common Anode Display Counter

4033 7 segment common anode display counter

4033 7 Segment Common Anode Display Event Counter Circuit

This circuit can count 0 to 9 with reset and display test switches.

4033 7 segment common anode display 0 to 9 event counter circuit


R1 – R7 1kΩ
R8 10kΩ
R9 10kΩ
R10 -R16 680Ω
R17 10kΩ
C1 0.1µF (104)
Q1 – Q7 C828
IC1 4033
S1 – S3 Push to ON Switch
Display 1 Common Anode 7 Segment Display
  • S1 = COUNT
  • S2 = RESET
  • S3 = LAMP TEST
4033 DECADE (÷10) COUNTER WITH 7-SEGMENT DECODED OUTPUT (Synchronous) cd4033

This synchronous decade, or divide-by-10, counter provides internal decoding to drive a 7-segment display. It does not have internal count storage, nor does it provide enough output current to directly drive high-current display types. A divide-by-10 square-wave output is also available.

VDD = +3 TO +15V

4033 PIN Configuration cd4033  decade counter
4033 IC 4033 PIN Configuration
In normal operation, reset and clock enable are held at ground and the ripple blanking input is connected to ground or a more-significant count stage. The counter advances one count on each ground-to-positive (positive edge) transition of the clock input.

There are two types of outputs. At the ÷10 output, a square wave that is high for count 0 through 4 and low for counts 5 through 9 results. At the a through g outputs, a high stage is produced if a display segment is to be lit. Segments b and c are used for the “1” output. Note that the “6” output includes segment a and the “9” output includes segment d.

The counter is reset to zero by bringing the RST terminal high. This results in an a-b-c-d-e-f low, along with a high on the ÷ 10 output. The RST input must be returned to ground when counting is to continue. A high on the Test input puts all outputs high for lamp or display test.

To automatically extinguish all right -hand zeros, ground the RB IN terminal of the most-significant stage and connect its RB OUT to the RB IN of the next most-significant stage, and so on down the line. This zero blanking is defeated by making all RB IN terminals positive.

The clock must be noiseless and have only one ground-to-positive transition per desired count. Rise and fall times should be 5 microseconds or faster.

Maximum clock frequency is 5 megahertz at 10 volts and 2.5 megahertz at 5 volts. Total package current at a 1 megahertz clock rate with unloaded outputs is 0.4 mA at 5 volts and 0.8 mA at 10 volts.

You can increase counting number by adding below circuits.

4033 7 segment counter second stage circuit


You can add any number of fig.2. circuit for increase counting number.
You must connect;

  • All Y points and all Z points ( Fig.1. Y to Fig.2. Y and Fig.1. Z to Fig.2. Z)
  • Fig.1. X to Fig.2. A

When you add 3rd display, second display circuit X point connect to third display circuit (like fig.2. circuit) A point.

4033 7 segment common anode display counter 4033 7 segment common anode display counter 0 to 99

Please send your ideas, which are very important for our success…

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16 comments on “4033 7 Segment Common Anode Display Counter
  1. hamilton says:

    i want a circuit with 2 display 7 segment that count, one display count 0 to 4 and another count 0 to 7

  2. R.vasantharaj says:

    hamilton :
    i want a circuit with 2 display 7 segment that count, one display count 0 to 4 and another count 0 to 7

    yes it you can make by simply reset the counter after 4 ,when disply 5 a,c,d,f,g these segment come active high that you take as a in put , using AND gate do AND operation , give the out put of the AND to the reset pin , you will get your circuit.

  3. Zubin says:

    i want to interface two 7segment display with 1 remaining 0 uptil other becomes 9 after that they should disply 10,11,12 and so on…..and do reply on my email plss…

  4. Leon says:

    i want to use 5 displays….is it possible to make the counter count in increments of 5

  5. Y.HARIPRASAD says:

    i wish to design digital using 555 and cd 4033 counter and 7 segment dipay . if you have any circute please forward to me

  6. Greg Erich says:

    I have taken some generic deli counter boards that use your design and I am using them to drive an external relay set so I can drive high powered LEDs to be used at swim meets.
    I have a real need to rest this, Would it be possible to use to reset this by pulling 15 away from the ground while at the same time connecting it high. I have a remote control relay that can do this. But i want to make sure it makes sense. In the boards I have they don’t use any 10K resistors. Thanks

  7. arshad says:

    i want to use 3 displays…is it possible to make ?? send me circuit diagram

  8. Abraham says:

    Do you know how to make the counting start from 1 instead of 0 ? I am trying to make a simple electronic dice that counts from 1 to 6. Thank you so much

  9. JAMES LARYEA says:


  10. keith says:

    A seven-segment display is wired as common-ANODE and connected to PORT B. RB0 through RB6 are connected to segments a through g. The command PORTB = 0xB0 is reached in the program. What will display?

  11. Arief Rahayu Wicaksono says:

    i try this schematic but no work, what should i do?

  12. Arief Rahayu Wicaksono says:

    i use ic cd 4026be,

  13. Daniel says:

    please design the seven segment display unit circuit and briefly explain how it works

  14. Miguel says:

    Once the 4033 is energized it automatically sends all decoded outputs on (lighting a “8”). What am I doing wrong?

  15. Claudio says:

    How change the circuit in order to it counts back? Thanx

  16. Manoj vaishnav says:

    How to increase numbers from 1to 10,000 on disply……… By press push-button……..

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