Headphones are output devices.
No.
No it isn't. ---- Technically speaking that is correct headphones are not electronic devices. They are a form of tranducer and therefore an electro-mechanical device.
Headphones
Corded headphones are not the wireless kind.
Headphones connected to the computer's headphone jack aren't seen as a separate device. They are just connected to the 'line out' or 'headphone out' and use the device that is created by the sound card's drivers.
Check that the device is producing sound - what are the headphones plugged into? Is the volume on the device turned up. Is there a sound control panel? Unplug them and see if it is working. if necessary, borrow headphones from someone else. Try your headphones in another device. If they still don't work then they are broken and you need to replace them.
If they are for hearing then its output device as they are not putting anything in to the computer, if they have a microphone attached as well then they are input/output (i.e. microphone is input, speakers are output)
Yes, Bose Bluetooth headsets can be used to play music. The headphones link to a Bluetooth device, such as a smartphone, and access the playlist on the device. The music on the device is transmitted to the headphones through Bluetooth technology.
Output, the sound is coming from the computer. Headphones are output; they produce something after receiving signal from another device, such as a computer or electronic player. When you use headphones they go in the output port of your computer.
Most headphones draw the exact same amount of power from your audio device.
Listening to music from an ipod/mp3 device.