This week Microsoft gets applauded for promising not to do something. Yahoo, OLPC, iPhone and the Ramomes all cameo. Quick: How much profit did Yahoo rake in last quarter? Ah, that was an easy one. Here’s another: Apple just bought P.A. Semi for $278 million. What, pray tell, is P.A. Semi? Think you know tech? Prove it and take the InfoWorld News Quiz. Software Development