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Monitor:

Monitor also known as a Visual Display Unit (VDU) and the major function of a monitor is to display the processed data like images, videos, text, audio, etc. A monitor arranges the microscopic dots known as pixels in a rectangular pattern to make images. The number of pixels present determines the sharpness of an image.

Monitor is an output device which is used for producing soft-copy output. It is also known as VDU i.e. Visual Display Unit. It forms images from tiny dots, called pixels that are arranged in a rectangular form.

Types of Monitor

Cathode-Ray Tube (CRT): CRT’s Screen display is made up of small picture elements called pixels. The smaller the pixels the better the image clarity or resolution. CRT is the large bulky sized monitor. It has high power requirement so it is not appropriate for portable devices.

CRT Monitor

Liquid crystal display (LCD): contains liquid crystals in between two plates of the screen. The plates are made by either glass or plastic. The front plate is transparent and the back plate is reflective. Liquid crystals are charged electronically to display the content.

LCD monito

Light emitting diode (LED): contains multiple small bulbs. The contents are displayed by turning the bulbs “on” and “off”. Initially it was used only for simple digital displays like in calculator, digital watch, etc. At present it is also used in television, desktop PC, laptop, etc.

LED monit

Plasma display: It contains neon gas in between the two plates of the screen in place of liquid crystals of LCD. It has larger viewing angle but is expensive than LCD. It is smaller in size, light in weight and it has low power requirement and low brightness.

Plasma monitor

Printer: A printer is an external hardware output device that takes the electronic data stored on a computer or other device and generates a hard copy. Printers are one of the most popular computer peripherals and print text and photos.

Types of modern common printer

3-D printer: 3D printers take a digital blueprint of an object and reproduce it layer-by-layer using various materials such as plastic and metal alloys. See our 3-D printer definition for further information.

Print tools or parts needed to build something.
Print replacement parts for something broken.
Print toys for children.
Print objects to be sold.

3D printer

Inkjet printer: Inkjet printers are similar to dot matrix printers in that the images they create are composed of dots. However, the dots on an inkjet printer are shot onto the page rather than using a ribbon and pins.

Print a copy of a document for school.
Print a paper that can be physically signed.
Print colored pictures that can be viewed

without a monitor or mobile device.

Print receipts for purchases made online.

Inkjet printer

Laser printer: Utilizes laser technology to print images on paper. Laser printers are used for corporate, school, and other environments that require print jobs to be completed quickly and in large quantities.

Quickly print hundreds of text documents or pages.
Print hard copies of professional or legal documents.

LLas

LLaser printer

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