A display ADAPTER is neither. The Display is an output device.
A (n) touch screen is a monitor element that has both an input and an output device. Touch screen : A display screen with a transparent touch-sensitive covering that allows a user to select input by touching the screen rather than using a keyboard or a mouse. a touch screen does triple-duty as an output device, a display, and an input device.
monitor is an output (display) device
Display Screen
No, VDU is an output Device.
(Video Display Terminal) An input/output device that contains a screen, keyboard and mouse.
Your monitor/display system.
Display/Monitor Printer Speakers
Your monitor/display system.
Hi... Its is quite simple, output device is used to display output of any application or whatever you do on computer. Example is monitor or any other screens used to display result. Printers and some other devices are also considered as output devices.
Display Devices
These are the input devices are:- keyboard, mouse, light pen, scanner. output devices are:- monitor, printer.