What are example of digital output devices?

An input device could be a memory stick and an output device can be a keyboard

Monitors, Printers, NIC's, Hard Drives can be both, and optical drives.

All single pole single throw switches are digital input devices, as are press to make and press to break switches, basicaly any input that is either on or off.

hi, as in machine tool industries or any the other engineering industry some of input devices are like limit swicthes ,push buttons,selector swicthes etc. and output devices are like induction...

a printer