SANTA CLARA, California :SiTime on Wednesday released a new chip aimed at helping it enter a $4 billion market and land customers in wearable electronic devices. The small Santa Clara, California-based chip company, which had just over $200 million in sales last year, is one of the few that focus specifically on what are known as timing chips. The job of timing chips is to keep all of the other chips in a complex electronic device in sync, like a conductor at the front of an orchestra. While