An output device is any piece of computer hardware equipment used to communicate the results of data processing carried out by an information processing system (such as a computer) which converts the electronically generated information into human-readable form.

22 39 Output devices for computers

[For this purpose], the output components are those elements of the user-system interface by which the user receives information from the system. The user needs to be able to sense the information, to recognize it and to act upon it. Source: ETSI EG 202 116 V1.2.2 Included are, e.g., display monitors, printers, plotters and synthesizers.

22 39 12 Special output software

Included are, e.g., software that enlarges the text and graphics displayed on a computer screen, software that reads the display and converts it to speech (screen reader).
Source: EASTIN

An output device is any piece of computer hardware equipment used to communicate the results of data processing carried out by an information processing system (such as a computer) which converts the electronically generated information into human-readable form.