Question: Which of the following is not input device

Answer:

A printer is not an input device, it is an output device.
Input devices are used to provide data and control signals to a computer, and examples of input devices include:

• Keyboard
• Mouse
• Touchpad
• Touchscreen
• Scanner
• Microphone
• Webcam
• Joystick
• Gamepad
• Digital Camera

Output devices, on the other hand, are used to display or output information from a computer, and examples of output devices include:

• Monitor
• Printer
• Speaker
• Projector
• Headphones
• Plotter

Therefore, a printer is not an input device but an output device that produces a hard copy of output from the computer.