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Near-field communication (NFC) is a set of communication protocols that enables communication between two electronic devices over a distance of 4 cm (1 + 1 ⁄ 2 in) or less. [1] NFC offers a low-speed connection through a simple setup that can be used for the bootstrapping of capable wireless connections. [2]
A wireless keyboard is a computer keyboard that allows the user to communicate with computers, tablets, or laptops with the help of radio frequency (RF), such as WiFi and Bluetooth or with infrared (IR) technology.
Instead, keyboard letters and numbers are used. The diagram below shows the special characters a US Mac keyboard will produce when the Option key is pressed. [1] The highlighted orange keys show the accents available from the combination of the Alt key and the keyboard characters e i u (on the top letters row) and ` n (on the bottom letters row ...
When most people think of near-field communications (NFC), they think smartphones. Google (NAS: GOOG) has been pushing it pretty aggressively into Android phones, laying the foundation for Google ...
The USB devices communicate with the host computer using the human interface device (HID) protocol, essentially mimicking a keyboard. [9] [failed verification – see discussion] This avoids the need for the user to install special hardware driver software in the host computer and permits application software (such as a browser) to directly access the security features of the device without ...
PC—Personal Computer; PCB—Printed Circuit Board; PCB—Process Control Block; PC DOS—Personal Computer Disc Operating System; PCI—Peripheral Component Interconnect; PCIe—PCI Express; PCI-X—PCI Extended; PCL—Printer Command Language; PCMCIA—Personal Computer Memory Card International Association; PCM—Pulse-Code Modulation
The keyboard sends the key code to the keyboard driver running in the main computer; if the main computer is operating, it commands the light to turn on. All the other indicator lights work in a similar way. The keyboard driver also tracks the shift, alt and control state of the keyboard.
IBM states that AltGr is an abbreviation for alternate graphic. [3] [4]Sun Microsystems keyboard, which labels the key as Alt Graph. A key labelled with some variation of "Alt Graphic" was on many computer keyboards before the Windows international layouts.