Computer monitors are simply known as 'monitors'. Without a computer monitor, it is impossible to interact with computers. All the information’s about input as well as output can be known from the computer display monitor. Monitor is an electronic component, produced with the substance to display text as well as images. Nowadays distinct types of monitors are manufactured in the UK market. Some are CRT monitors and some are TFT LCD monitors. Here, you are going to read about some basic details about CRT monitors.

What is CRT?
CRT is an acronym of 'Cathode Ray Tube'. This tube is charged by cathode rays negatively. In this type of CRT monitors, the screen will be coated with dots pattern. Those dots will glow while the electron stream flashes on them. Three dots are collectively known as 'cluster'. Dots make a pixel. A single cluster is capable of producing colours. A minimum of 10,000 tiny dots is essential to create an image on the monitor. When the dots are close to each other, the image will be sharp and clear.

Dot Pitch
The actual distance between pixels in a computer monitor is known as 'Dot pitch'. The distance is measured in millimetres and it is better to buy a monitor with lower dot pitch to get higher display quality. Lower the dot pitch, higher the image quality. Mostly all the manufacturers produce monitors with a dot pitch of 0.28 millimetres or less.

Parameters to be considered
While you go for buying a computer monitor, it is better to consider some essential parameters like:
1. Luminance
Luminance is simply known as brightness of the monitor. The monitor has to be bright enough to display images on the screen with clarity and sharpness.

2. Size
Monitors are available in different sizes. Normally the monitors are measured diagonally.

3. Dot pitch
The distance between the same colour pixels is called dot pitch, which is measured in millimetres.

4. Response time
The minimum time taken to display the images on the screen is known as response time. It is recommended to choose monitor with low response time.

5. Refresh rate
The number of times that a display illuminates in a second is known as 'refresh rate'.

6. Power consumption
The power requirement to operate the computer monitor has to be considered while buying a new computer monitor.

7. Aspect ratio
The term 'aspect ratio' refers the ratio between the width and height of an image. In case of 2:1 aspect ratio, the width of an image is twice as large as the height.

8. Resolutions
Resolution means the total number of pixels that can be displayed on the monitor.