A retinal image is produced by a 200 degree wide angle Scanning Laser Ophthalmoscope. The optomapÂ® retinal image gives eye-care professionals a much larger view (200 degrees) of the back of the eye â your retina â than conventional eye exam equipment. The images can be taken without dilating your pupils â a very common procedure which is uncomfortable and inconvenient for many people.
The computer mouse and scanner fall under the input device category. As the name suggests, input devices are used to send information to the computer. A mouse is used to input the movements of a cursor, while a scanner is used to input physical media into digital format. Output Devices. Printers and speakers are examples of computer output devices. Printers output digital information such as text or image files to a physical medium such as paper.
Keyboard. 1  is an input device that enables the user to enter characters (letters, numbers and symbols) into a computer. 2  is a hand held pointing device that is classed as a manual input device. 3  is an input device which is mostly used for playing computer games such as flight simulators.