SR- seven segment

Hello guys,

Just want to know if it is possible to use a S-R flip-flop connected to a seven segment and then use it as a counter and see the numbers on the said seven segment? If so, can we makethe inputs of 2 or 3 flip-flops in parallel to count 3 seven segments?

Thanks a lot for any help

To count you need JK FF because of the toggle function. To "READ" the count you need a decoder/driver.

Usually the counters are BCD for each decimal digit. The counters for each digit count from 0 to 9.

KeepItSimpleStupid said:

To count you need JK FF because of the toggle function. To "READ" the count you need a decoder/driver.

Usually the counters are BCD for each decimal digit. The counters for each digit count from 0 to 9.

Click to expand...

Thanks.
WHat do you mean by "toggle function"? Do you mean clock?

How to do so by one or more JK flip-flops? Is there any circuit showing how to do so?
There would be a Microcontroller or just several keys in the inputs of FF which tell the FF which nemaber it shows on seven segments..

With J and K tied together, the FF toggles on the C input. The output Q drives the next FF. This could be cascaded forever to make a binary counter. The digits would have weights 2^0, 2^1, 2^2, 2^3, 2^4 etc.

The C input has to be suitably de-bounced if coming from a switch, otherwise you will get multiple counts.

I don't think you have a grasp of what a 7 segment display is. 7 segments means that their of effectively 7 segments that can make up a digit. There is a common pin which can be + for common anode and - for common cathode. There is usually 1 or 3 decimal inputs as well.
These are LED's. If you want to display a 2, you have to turn on 5 segments, a 1 requires 2 segments. You can buy an integrated display that contains a BCD decoder/driver and usually a strobe. More often than not, the displays are multiplexed with segment drives and digit enables. At least that's the way a microcontroller would do it.

Here is another website: http://www.kpsec.freeuk.com/counting.htm

Here are a few circuits: http://hyperphysics.phy-astr.gsu.edu/hbase/electronic/bincount.html

OK thanks a bunch for your help.
It makes sense