By Noel Randewich LAS VEGAS (Reuters) – Intel CEO Brian Krzanich showed off wearable computing devices on Monday including earbuds that monitor your heart rate and a smart headset as the worlds largest chipmaker tries to get back on track after missing out on smartphones. With PC sales falling and smartphone growth tapering off, Intel and other technology companies are betting that movement-sensing bracelets, biometric patches and other wearable electronic devices may catch on with consumers and become major markets. Intel dominates the PC industry, but it has been slow to adapt its processors for smartphones and tablets, markets now dominated by rivals like Qualcomm and Samsung Electronics. A years-long project to provide consumer TV services was shelved last year with its technology put up for sale and the companys mobile processors have barely made a dent in the global smartphone market even after major improvements to them.