The Signs of a Bad CMOS Battery. 1  How to Remove a Desktop Battery From the Acer Aspire. 2  How to Replace the CMOS Battery in a Dell Latitude 600. 3  How to Replace a CMOS Battery. 4  How to Clear CMOS on HP Laptops. 5  How to Make a Computer Turn on From the Motherboard.
A summary of near-field communication. Near-field communication (NFC) is a set of communication protocols that enable two electronic devices, one of which is usually a portable device such as a smartphone, to establish communication by bringing them within 4 cm (1.6 in) of each other.
Headphones (or head-phones in the early days of telephony and radio) are a pair of small electronic or electric listening devices that are designed to be worn on or around the head over a user's ears. They are electroacoustic transducers, which convert an electrical signal to a corresponding sound in the user's ear.