Electronic Scoreboard Using IC 4033 Counter

A simple multi-digit electronic score board system can be built using a basic 4033 IC counter circuit. The whole procedure is explained in the following article.

So far we have learned quiet a lot about this interesting IC 4033 through the following posts that have comprehensively discussed the pinouts and cascading procedures of the chip.

4033 pinouts

cascading 4033

In this post we will learn how to make a simple counter circuit for counting number of positive pulses applied manually in the form of high logics at the input of the IC.

Referring to the shown simple counter circuit diagram, the IC 4033 which is a Johnson's counter/divider display decoder driver IC is configured solely for the required counting actions.

Simulation and Working

The circuit is pretty straightforward, the various pinouts used in the configuration may be understood with the following points:

Pin#1 is the clock input which is connected to a push switch via a couple of diodes and is also terminated to ground through R4 and C2.

Here the push-switch is used for pulsing the input of the IC for getting the corresponding count over the connected common cathode display across its output pins: 7,6,11,9,13,12,10.

The two diodes make sure that the IC responds only to legit switching and not to accidental spurious triggers.

R4 and C2 prevent debouncing effect that could occur during the clocking operations.
With every push of this switch, the output advances by one digit until it reaches 9 after which the display returns back to zero in order to repeat the cycle.

Another push switch can be seen connected at pin#15 of the IC 4033, this is used for resetting the IC output reading to zero at any desired instant in the course of the counting process.

C1 ensures that the IC always displays a 0 over the connected display during power switch ON.

R1 ensures the required logic zero to pin#15 of the IC for making it functional.

C3 is the decoupling capacitor, imperative for all logic ICs as per the standard rules.

Using IC 4033 IC Modules

The simplest and the best method is to use many such modules as explained above and arrange them in line for acquiring the required number of displays on the scoreboard.

Suppose we need a 4 digit scoreboard for the application, then 4 of these modules may be fixed one beside the other for implementing the scoreboard display system.

Now by simply pressing the relevant push buttons one could allow the desired number to appear in the relevant slot of the multi-digit display board.

Using the above method provides the facility of setting/resetting of any particular digit as per individual wish or requirements. This is simply done either by using the clock push button, the reset button or perhaps both during the counting operations.

Thus the above suggested electronic scoreboard becomes very easy to handle even by novices in the filed, or by any layman.

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Cycle Zone said…
Dear plz give me an auto polarity changer circuit
John Bufete said…
Sir, the LT 543 and CD 4033 are not available in our place, what are the possible options or replacements for these? I'm a student sir and I always browse this website for my projects. Thank you
Swagatam said…
John, you can use CD 4026B instead of 4033, for the display you can use any 7-digit common cathode type module
Miraj Htm said…
i tried but only 8 is illuminated. nothing happen when i press button
Miraj Htm said…
another question. can i use down button in this circuit( sometimes i need to count down)
Swagatam said…
with every press of the "count" button there will be an increment of 1 digit on the readout...

check your IC connections.
Swagatam said…
sorry there is no "down" feature in this circuit
Robin Closen said…
Can I use this with a scoreboard digit made from 7 12 volt LED strip lights ?
Swagatam said…
you will require BJT current amplifier stages for operating the strips, the IC directly won't be able to drive them

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