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.
Near Field Communication. A technology standard for very-short-range wireless connectivity that enables quick, secure two-way interactions among electronic devices. NFC technology typically takes the form of a small chip embedded in a phone or a plastic card (like a credit card). The phone or card is simply placed on or very near a reader device (such as a pad on a debit card terminal, kiosk machine, or turnstile) - or another portable NFC device - to initiate a transaction.