I'm doing a little scoreboard project that I now got a little stuck on and want to see if anyone with experience can help me.
The scoreboard have 4pcs of 7-segment displays and a total of 22 LED's that needs to be individually controlled.
The 7-seg.disp are the cathode-controlled type.
Is there any type of output-extender IC that I will be able to control all leds and displays via a digital stream to or do anyone got a better example
to control everything with my uC?
Here is an example of the scoreboard to help if I explain badly
