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Wireless keyboard
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<p>A <i>wireless keyboard</i> is a <a href="/facts/Computer_keyboard/MczF9LIS">computer keyboard</a> that allows the user to communicate with computers, tablets, or laptops with the help of <a href="/facts/Radio_frequency/aWku7h4R">radio frequency</a> (RF), such as <a href="/facts/WiFi/u94quCsx">WiFi</a> and <a href="/facts/Bluetooth/sWAjpMrj">Bluetooth</a> or with <a href="/facts/Infrared/44XdJNcc">infrared</a> (IR) technology. Wireless keyboards in the current market are commonly accompanied by a wireless <a href="/facts/Computer_mouse/fJpa1tUE">mouse</a>. </p><p>Wireless keyboards based on infrared technology use light waves to transmit signals to other infrared-enabled devices. In case of radio frequency technology, a wireless keyboard communicates using signals which range from 27 MHz to up to 2.4 GHz. The majority of wireless keyboards today work on 2.4 GHz radio frequency. Bluetooth is another technology that is being widely used by wireless keyboards. These devices connect and communicate with their parent device via the Bluetooth protocol. </p><p>A wireless keyboard can be connected using RF technology with the help of two parts, a transmitter and a receiver. The radio transmitter is inside the wireless keyboard. The radio receiver plugs into a keyboard port or <a href="/facts/USB/XcIKWLyg">USB</a> port. Once the receiver and transmitter are plugged in, the computer recognizes the keyboard and mouse as if they were connected via a cable. </p>