SEATTLE - Apple Inc., maker of Macintosh computers and the iPhone, reports fiscal second-quarter earnings Wednesday after the closing bell. The following is a summary of key developments related to that period. OVERVIEW: In January, Apple founder Steve Jobs addressed the matter of his increasingly gaunt appearance — twice. He first said it was caused by an easily treatable hormone imbalance, and that he would remain at the helm. The next week, Jobs, a cancer survivor, revealed the problem was more complicated and said he would take a medical leave of absence until the end of June. Chief Operating Officer Tim Cook is running the company in his absence.