How does wireless keyboard work? A wireless keyboard is a type of computer keyboard that communicates with computers, tablets, or laptops by radio frequency (RF) technology such as WiFi or Bluetooth, or via infrared (IR) technology. Nowadays, it is usual for wireless keyboards to be paired with a wireless mouse. A keyboard may also have an integrated mouse that can double-function as a pointing device and a computer input device. Wireless keyboards are often used for portable devices, such as notebooks, netbooks, tablet PCs, smartphones, and other mobile computing platforms.
A keypad on a laptop or desktop computer is often considered a means of typing text into the system rather than using a separate keyboard. However, some manufacturers offer USB keyboard adapters which allow the use of a separate external keyboard while connected to the machine via USB port. In this blog, we also have an article about wireless keyboard under 500 that you might want to see about it.
How Does Wireless Keyboard Work
The benefits of a wireless keyboard include:
- No need to carry the cable around; The cable can get tangled up or disconnected from the computer. A wireless keyboard eliminates this problem.
- It saves space; Most people don’t realize how much space they waste carrying around cables. With a wireless keyboard you will save lots of space in your bag/purse.
- You can easily connect the keyboard anywhere you want; You can set it at any place where there is no internet connection.
- There’s less chance of getting damaged; The chances of getting your wires damaged are minimal because there’s no risk of tripping over them or getting entangled with something else.
- Easy operation; Unlike wired keyboards, you won’t have to struggle with unplugging cables every time you switch between two different systems.
- It’s easier to transfer data; When transferring files, you’ll not have to worry about losing the data due to a power outage.
- Some models may come bundled with a mouse. This mouse can be used on its own when needed but it can also function as an alternative to a standard mouse if required.
Working of a Wireless Keyboard
A wireless keyboard operates in a fairly straightforward manner. In the case of wired keyboards, the keyboard is linked directly to the computer, and the computer receives the signal transmitted by the keyboard via cable. However, what about wireless keyboards? Signals are transmitted using infrared or radio frequencies (RF).
The fundamental concept to grasp here is that data is delivered from a keyboard (transmitter) to a computer via USB (Universal Serial Bus), which functions as a receiver and receives the keyboard signals. Additionally, the wireless keyboard utilizes Bluetooth technology, which has a greater range than infrared. Infrared keyboards have a limited range and operate within the computer’s line of sight. This means that infrared keyboards cannot be used when the computer is not connected.
The computer contains an Integrated Circuit (IC) chip that accepts all information from the keyboard and transmits it to the computer’s Operating System (OS). The computer’s CPU (Central Processing Unit) processes and decodes the encoded data from the keyboard and displays it on the monitor. Each letter on the keyboard is assigned a unique code. For instance, the code for the letter T is U+0054.
The Different Types of Wireless Keyboards
Two primary components make up an optical keyboard: light emitting diodes (LEDs) and photo sensors. Both of these components are incorporated into the Printed Circuit Board (PCB). LEDs operate on the ‘electro luminescence’ concept, whereas photoelectric sensors ‘detect light rays’ from any device. The sensors detect the horizontal and vertical light beams generated by the LEDs. These light beams are blocked by the prompted key on the keyboard, thereby identifying the key.
Keyboard with Laser
The laser keyboard’s picture of the keys is projected or displayed on a flat surface. However, how is this accomplished? The complementary metal-oxide semiconductor (CMOS) or the Virtual Interface Processing CoreTM, which is an infrared sensor, monitors the movement of the user’s fingers on the keyboard. The processing core of the virtual interface is a sensor chip that determines the location of the activated key. The image of the key is presented on the projector (screen) through a red diode laser, and the image is expanded via diffractive optical components.