The printer and Monitors

Hello everyone here and welcome back to technology Wednesday, yes i am back once again to share about technology,but j guess this topic is a common thing that most people know.

It is about

Printers and Monitors

A printer can be defined as an output device that allows one to transfer or copy data that has been processed from the system onto paper.
The printer produces paper copy of the information also know as the "Hard copy"

A printer is also linked by connection cable through which one of those cables connect the printer to the power source and the other cable links the pei her to the system unit.

TYPES OF PRINTERS

There are two major types of printers:

• Impact printers
• Non-impact printer

1. "Impact printers" :
   These type of printers form impressions by the print elements impacting against the paper. These printers are usually noisy and slow in operation to produce characters.

Examples of this type of printers is

• Dot-matrix printer

• Daisy wheel and thimble

• Print wheel printers or Line matrix

• Band line printers

• Drum printers

• Chain printers

• Bar printers

• Printer keyboard.

1. "Non-impact printer": These type of printers on the other hand does not use physical impact to transfer different characters onto paper, and there is not presence of an inked ribbon. The print elements do not come into contact with the paper.

Examples are:

• Laser printers
• EDi printers
• Ink-jet printers
• Thermal printers
• Electrostatic printers
• Xenographic printers

Monitors

The most commonly used output device is the Monitor who's is also usually called the video Display Terminal (VDT)..
It displays graphics and characters on a television-like screen.
A VDT has a cathode ray tube like an ordinary television set. Most portable computers uses Liquid Crystal Displays

All monitors have in and off and on and controls for screen brightness and contrast. Monitors have two connecting cables.
One connects the monitor to a source of power while the other one connects it to the CPU.

TYPES OF MONITORS

There are two types of Monitor

1. Monochrome Monitors: These type of Monitor are monitors with one colour and then a background colour, for example white upon black, and green upon black.

2. Colour monitor: These produce many colours, they are more expensive obviously than monochrome Monitors. Their resolutions also are much higher.

They are more common And can be classified into the following:

• Colour monitor with graphic adapters (CGA)

• Colour Monitors with enhanced graphic adapters (EGA)

• Colour monitor with video graphic array (VGA)

• Colour Monitors with super video graphic array (SVGA)

That is it for today, thanks for reading.

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