Microcontroller › AVR › Atmega16 and LED dotmatrix › any micro controller can not
May 1, 2014 at 6:34 pm #11667
any micro controller can not work without crystal circuit. so crystal circuit is must. in dot matrix LED there is nothing like common cathod, common anode. all the anodes are rows and all cathodes are columns. or reverse it may be. any one or both can be driven by transistors.