I have designed a frequency counter circuit diagram. See below.
Now I am stuck on the part to wire up the decimal point in my circuit. The one that's the LED beside the 7 segment display. Do let me know if you find it hard to see the image below.
So basically I am supposed to:
Display the frequency on three 7-segment displays with a decimal point wired up so that:
The display is in the format XX.X.
If the current frequency is out of the current range, all the segments are OFF except for the decimal point.
Arrange the displays so they read left-to-right.