transiver
A type of device that a computer sends information to.
A joystick is a input device used for some computer games. It is a little stick mounted in a base and sends signals corresponding to the direction in which the stick is moved.
The data transceiver
telephone
Microphone converts Audible Sound into digital signals that's why it will be considered as an INPUT device not an Output device.
router
Hub
Because it sends the data to the particular address
The IP address of the router or firewall's interface that is connected to your network. It then performs routing, filtering, and as a last resort sends it out into the internet.
When you print something, your PC sends signals to the printer. This used to be accomplished via cables, but is now done wirelessly.
Input as it sends the video/images into the computer.
computer networking