Computer - Output Devices

A Computer System uses several Output devices to take outputs. There are different type of devices that gives output to a computer system.

Look at the following input devices:-

• Monitor
• Speakers
• Headphones
• Printer
• Projector

About Output Devices In Detail :

Monitor

A Monitor is an output device that displays all graphical user interfaces and processes. The monitor is a television-like device. A monitor usually comprises the visual display, circuitry, casing, and power supply. The display device in modern monitors is typically a thin film transistor liquid crystal display (TFT-LCD) with LED backlighting having replaced cold-cathode fluorescent lamp (CCFL) backlighting. 

Previous monitors used a Cathode Ray Tube (CRT). Monitors are connected to the computer via VGA, Digital Visual Interface (DVI), HDMI, Display Port, USB-C, Low-Voltage Differential Signaling (LVDS), or other proprietary connectors and signals.

Speakers

Speakers are the most used computer output devices that receive electromagnetic waves from the computer's sound card and produce output in the form of sound waves (audio). These speakers are also called Multimedia Speakers. They are usually capable of audio uses like mp3 player, video games sound, home theatre, etc.

Headphones

A Headphone is a listening device with two small speakers and sometimes with a mic. Headphones are small speakers that can be worn on the head covering both ears. Like speakers, headphones contain transducers that convert an electric signal into sound waves.

Printer

Printers are the most commonly used output devices that print text, forms, graphics, and pictures on paper. A Printer receives commands from connected computers and makes hard copies of electronic data. It can be shared with many computers connected to the same network. Printers are of many types some can only print with computer commands, some printers are color printers and some can scan hard copies as well as print.

Types of Printer:-

Laser-Jet Printer

A Laser-Jet printer is a type of printer that uses a laser and electrical charge model instead of the traditional printing of ink onto paper. Laser printers have increased the neatness and sophistication of print projects, with typical resolutions of 600 dots per inch or higher.

• Ink-Jet Printer

An Ink-Jet Printer is a type of computer printing device that recreates a digital image by propelling droplets of ink onto paper and plastic substrates. Inkjet printers are the most commonly used type of printer and range from small inexpensive consumer models to expensive professional machines.

• Character Printer

A Character Printer is a printer that prints one character at a time. Typical a Character printer is the dot matrix printer.

• Dot-Matrix

A Dot-matrix printer sometimes called an impact matrix printer, is a printer in which ink is applied to a surface using a relatively low-resolution dot matrix for layout.

Projector

A Projector is an optical output device that projects a computer screen, presentation, document, pictures, and videos on surfaces like walls and curtains. It has many options to take input from such as HDMI Port, DVI-D Port, and VGA Port, It also has an audio port. Movie theatre uses high-resolution Projector and offices use this type of projectors.

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