Pictures of Output Devices

Home >> Free Online Computer Training Course >> The Online Training Plan >> Computer Fundamentals >> Picture of Output Devices


Some pictures of output devices are featured on this page as a continuation of the first paper - computer fundamentals - in the Free Online Computer Training Course of our Lift Above Computer Illiteracy (LACI) programme.

Pictures of storage devices will also be considered on a different page with brief explanations of their functions and uses during the day-to-day operations of the computer.

Output Devices Explained

Output devices are computer components which allow the computer user to obtain data / information from the computer during data processing, either in soft copy form on the computer monitor, or in hard copy form with the aid of a printer.

Examples of output devices are Visual Display Unit (VDU) or monitor, printer, speakers, headphones, projector, plotter, and so on.

For a complete definition and explanation of the computer, as well as, its attributes, characteristics, functions and uses, please see the web pages: Definition of Computer and Computer Fundamentals.


Pictures of Visual Display Unit

The visual display unit or monitor is an output device. It is an integral part of the computer's core architecture.

Though the actual data processing takes place within the system unit, the monitor is indispensable to the use of the computer.

During data processing, no meaningful headway can be made without the monitor as it is the only computer component through which the operations of the computer can be seen and interpreted.

Generally speaking, there are two types of monitors in use. They are the desktop monitor and the flatscreen monitor. The pictures of both types of monitors are displayed below.

picture of desktop monitor picture of flatscreen monitor
Fig. 7: Picture showing the desktop and flatscreen monitors.




Being computer literate is certainly no longer an option. It is a necessity.

Therefore, do yourself a whole world of good. Be ICT compliant today. Enrol for the free online computer training course, actually participate in the 10-day course and graduate as a very knowledgeable computer user.


Click here to enrol and benefit fully from the
Free Online Computer Training Course
.


Explanations and Pictures of the Printer

The printer is an output device which is not an integral part of the basic computer's hardware components.

As mentioned earlier in this first part of the Free Online Computer Training Programme referred to as Lift Above Computer Illiteracy (LACI), most output devices are also peripheral devices because they are not indispensable to the normal day-to-day operations of the computer.

The printer is one of those output devices which is also a peripheral device.

This is because the printer is not needed at all throughout the data processing phase of the computer's operations. It is only required when there is need to produce the soft copy of the result of data processing in hard copy form, that is in black and white on paper.

There are three basic types of printers generally in use across the globe today. They are as follows: Laserjet Printer, Inkjet Printer and All-in-one Printer.

Laserjet Printer is a type of printer which uses laser technology that is similar in operation to that of the photocopier. Additionally, it uses toner catridges and can print only in black and white. Laserjet printers are usually more expensive in cost than inkjet printers.

On the other hand, inkjet printers are a kind of printers which uses ink catridges for its printing operations. Unlike laserjet printers, inkjet printers print in both colours and black and white. Inkjet Printers are the most commonly used printers in different offices across the globe.

What about deskjet printers? Are they the same as inkjet printers? What is the difference between inkjet printers and deskjet printers?

The term "inkjet" refers to a type of printer technology, while "Deskjet" is a brand-name inkjet printer manufactured by HP. Inkjet printers are the most common type of printers, and they work by spraying tiny droplets of ink onto the paper.

In other words, the HP "Deskjet" printer is an inkjet printer.

The third type of printers are the all-in-one printers. This printer incorporates a scanner, a printer and a photocopier all into its architecture.

However, though cheaper in price compared to other printers, it is not advisable to buy this type of printer for office use where large quantities of documents are produced daily.

Pictures of the types of printers are shown below.

picture of dell laserjet printer picture of hp laserjet printer
Fig. 8a: Picture showing Dell and HP Laserjet Printers picture of hp all in one printer picture of inkjet printer
Fig. 8b: Picture showing the all-in-one printer and the inkjet printer.


Explanations and Pictures of Plotter and Projector

What are plotters? Plotters are hardcopy output devices used for large linear drawings and vector graphics.

In the past, plotters were used in applications such as computer-aided design, though they have generally been replaced with wide-format conventional printers, such as the A3 and A2 large format printers.

It is now commonplace to refer to such wide-format printers as "plotters," even though they technically are not.

What about projectors?

An LCD projector is a type of video projector for displaying video, images or computer data on a screen or other flat surface. It is a modern equivalent of the slide projector or overhead projector.

To display images, LCD (liquid-crystal display) projectors typically send light from a metal-halide lamp through a prism or series of dichroic filters that separates light to three polysilicon panels one each for the red, green and blue components of the video signal.

As polarized light passes through the panels (combination of polarizer, LCD panel and analyzer), individual pixels can be opened to allow light to pass or closed to block the light. The combination of open and closed pixels can produce a wide range of colours and shades in the projected image.

Pictures of a plotter and projector are shown below.

picture of plotter picture of computer projectors
Fig. 9: Picture showing a computer plotter and projector.


Pictures of Other Output Devices

Other output devices are speakers and headphones. These are computer components which are used for receiving audio output from the computer.

Combination of the speakers, headphones and CD-ROM drive make up multimedia devices.

Pictures of a speaker and headphones are shown below.

picture of computer speakers picture of computer headphones
Fig. 10: Picture showing a set of speakers and headphones.


Pictures of Other Computer Hardware

So far in this lecture of the Free Online Computer Training Course on this website, we have considered pictures of output devices with brief explanations of their functions and uses in the computer.

We concentrated principally on the output devices of the computer in this lecture.

In our next lecture, we will consider pictures of other computer hardware components together with explanations of their importance or significance, as well as their functions and uses in the computer.

These other computer hardware components that remain to be covered are as follows:

  • Pictures of Storage Devices
  • Pictures of Internal Components






Being computer literate is certainly no longer an option. It is a necessity.

Therefore, do yourself a whole world of good. Be ICT compliant today. Enrol for the free online computer training course, actually participate in the 10-day course and graduate as a very knowledgeable computer user.


Click HERE to enrol and benefit fully from the
Free Online Computer Training Course
.





Click HERE for the detailed training plan of the
Free Online Computer Training Course
.









Subscribe to
e-Business Success Digest - a 6-day FREE Mini Course

Follow
Kome Computers Blog too




Stay Connected!

Follow Kome Computers on Twitter
Follow Us on Twitter


Become a fan on Facebook
Become a Fan on Facebook


Visit Kome Computers Blog
Visit Kome Computers Blog