How many devices do you own or use that transmit signals(not just computer data)

Question

How many devices do you own or use that transmit signals(not just computer data) wirelessly? Think of as many as you can, and make a list showing the different types signaling used by each device. Don't forget that some devices use multiple wireless technologies, such as cell phones with both cellular signals and Bluetooth technology. Hint, don't forget cordless phones, tv and stereo remotes, radios, and portable computers.

(In your answer, put down a number, then a description of the device, and the different types of signal communication each device is capable of.)

Explanation / Answer

1. Wireless Headphones - Bluetooth is used for transmitting data, Some of the headphones also have a feature of radio i.e it uses a radio receiver which converts a signal into a useable form

2. Wireless Speaker - Both Headphones and speaker uses the same Bluetooth for transmitting data and for radio uses radio receivers.

3. Wireless Mouse & Keyboard - it can use radio frequency or Bluetooth, some of them comes with Bluetooth that directly connects with the pc, rest have transmitters and receivers, the mouse with the transmitters and receivers uses radio frequencies to communicate information to a computer.

4. Mobile Phone- it has a number of ways of communicating, it can use Wifi, Bluetooth, Infrared, radio antenna through which it can transmit or receive a radio signals. Radio waves transport digitized data in the form of a magnetic field which is also called electromagnetic field.

5. TV - it uses receivers and the remotes contain transmitters, Wifi and Bluetooth are there is smart tv, smart connect through a mobile device by creating hotspot which works like a router, which enables data communications connected to it and can transmit or receive data at same.

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