Broadcom has become a big name in consumer electronics and networking chips. But now the multibillion-dollar Irvine, Calif.-based chip design firm sees an even bigger opportunity in the market of silicon chips for wearable computing devices. The market for connected, wearable electronics is expected to hit $1.5 billion by 2014. And the company’s WICED Direct platform brings Internet connectivity to all sorts of previously unconnected appliances and wearable devices.