sorry again.this picture is earlier schematic my project. my actual project change because some thought.PORTA can use for analog input for further implementation.
here i reupload my project in proteus with i use for simulation.but from here i build my project ofcourse still there is few change.but the principle my project base of this simulation.
(if can't extract change ext to .rar)
i can't upload my project yet, because my project not finish. my project matrix 7x72 later if finish i will post it.
run1 use for clear temp register and give value for lacation table. it can remove or just clear register except last for scroll continiouly.