hi
i am umair i am doing my project on micro controller 18f family i am trying to build a electronic notice board using dot matrix 5*7 for display i used 8255a ic for port extension i'd stucked in this ic since last month i tried with different way to use its ports as i want but didn't get my desired result
please help me
i am umair i am doing my project on micro controller 18f family i am trying to build a electronic notice board using dot matrix 5*7 for display i used 8255a ic for port extension i'd stucked in this ic since last month i tried with different way to use its ports as i want but didn't get my desired result
please help me
