How to read the text printed on top of every IC?
1.&nbsp;Clean up the text with a cotton swab dipped in rubbing alcohol.



2.&nbsp;Wait for the alcohol to evaporate and rub yellow or white chalk on markings.



3.&nbsp;Wipe gently with a cotton swab and bingo!



Source (in Portuguese): http://www.piclistbr.org/paginas.php?fname=%20dicas.htm%20&amp;autor=%2009/2010%20-%20Luciano%20Sturaro