An Overview of CRT Monitors
November 21, 2007
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.
Dell E773c 17”Computer Monitor Review
November 19, 2007
The importance for the usage of computers has been increased a lot. Therefore people want to get efficient computer with high quality components. Monitors
play important role in displaying contents of the computer. Then only the computer users can view the documents, images and video files through the monitor. Dell is a reputed concern, which has developed and marketed a monitor in 17 inches, in the name Dell E773c 17” Computer Monitor.
The screen size of the unit is designed as 17 inches in size. The screen has the ability to refresh up to 60 Hz. This monitor utilizes CRT technology which has come with the capability to display high quality images. The screen has the stuff to procure up to 0.27 mm dot pitch. You can use this monitors with PCs.
Dell E773c Computer Monitor is designed with black exterior colour. The dimensions of the monitor is measured as 40.2 x 41 x 42 cm as width, height and depth. This monitor weighs just 15.5 kilo grams. The reflection angle of the unit is 90 degree. It has availed with P22 phosphor type. As it has been manufactured with the features of anti-glare and anti-static coating, the users can be free from eye problems to some extent.
The horizontal scan range of the Dell Computer Monitor is measured as 30 to 70 kHz and the vertical scan range of the monitor is 50 to 160 Hz. The users can get optical preset resolution up to 1024 x 768 pixels at the rate of 75 Hz. It has the ability to procure maximum preset resolutions up to 1280 x 1024 pixels at the rate of 60 Hz. The monitor needs power supply up to 100 to 240 VAC. The AC input needs power up to 50 to 60 Hz voltage.
Iiyama TouchScreen TS1900 19” Computer Monitor
November 17, 2007
Iiyama Touch Screen TS1900 19” Computer Monitor is a branded product directed from the company Iiyama. This product is a TFT active matrix monitor. Generally TFT monitors will give you a good result in displaying the pictures in the screen. This product also does the same with the integrated technology provided in it.
• This is a 19 inch monitor that is dedicated for perfection.
• The maximum refresh rate of this product is 75 hertz.
• With 19 inches in size this product has got the ability to support the maximum resolution of 1280 x 1024 pixels.
• The brightness of the product that it could deliver is about 300 cd/m².
• The contrast ratio is 1000:1.
• Generally brightness is to increase the brightness of the screen where as contrast takes the role of showing enhancement on the particular colour.
• The dot pitch is 0.29mm.
• This product is designed in such a manner that it could respond at an average of 12 ms.
• The interface of this unit is digital (DVI-D). This is a new technology that is now on the leading way to bring a great change in the field of monitor production.
• This has got the compatibility with MAC, PC.
• The colour of this product is a light brown shade that gives a dazzling look to the product.
• The width of this Iiyama Computer Monitor is 43 cm, the height is 41.4 cm and the depth is 24.1 cm. The weight of this unit is 9 Kgs.
• The viewing zone varies accordingly, horizontal/vertical: 150°/135°; right/left: 75°/75°; up/down: 75°/60°.
• The display colour is about 16.2 million colours.
• The pixel pitch of this Iiyama Monitor is 0.294 x 0.294 mm.
• The included accessories are power cables, D-sub cable, audio cable and user manual.
• The power supply for this product is AC 100 – 240 V, 50/60 hertz.
Philips 170S7FS TFT 17″ Monitor
November 15, 2007
Philips is an established company, which manufactures computer monitors with unique features. It has recently introduced a 17 inch monitor in the name of Philips 170S7FS 17" TFT Monitor. The unique advantage of the unit is it is a TFT monitor and has a flat panel display. TFT technology permits the unit to offer high quality colour display. It is easy to get wide angle display with the help of flat panel technology.
The unit has come with the minimum dimensions as 38 x 20 x 38.7 cm as width, depth and height. The monitor weighs only 4.7 kilo grams. The minimum power requirement of the unit is 230 volts. It supports TFT active matrix technology. This display has the ability to procure resolution up to 1280 x 1024 pixels that helps in displaying images with fine quality and clarity.
Philips Monitor is featured with compliant standards namely:
• TCO ‘03
• FCC Class B certified
• CE
• CSA
• UL
• TUV GS
• DDC-2B
• EPA Energy Star
• NUTEK
• SEMKO
The operational power consumption of the unit is 30 watts. It has come with the ability to offer 24 bit colour support. The user can enjoy full brightness up to 300 cd/m2. The image contrast ratio of the unit is 800:1. It has availed with the response time as 5 milliseconds. The exterior of the unit is coated with silver colour giving it a sleek and elegant look. It has the potential to procure pixel pitch up to 0.264 millimetres. It has featured with VGA signal input and has come with VGA interface.
It has come included with needed software installation, drivers and utilities. This monitor can support system which performs in the Operating System like:
• Microsoft Windows 98,
• Microsoft Windows 2000,
• Microsoft Windows Millennium Edition,
• Microsoft Windows XP etc.
Additional features of Philips 170S7FS Monitor are listed as:
• FlexiHolder
• sRGB colour management
• SmartManage
• Lead-free
• Super Ergo base
• Anti-glare
• Video Bandwidth 140 MHz
• Brightness adjustments
• RGB video signal
