Without a doubt, the most widely used tool in any workplace in the 21st century is the computer. The same holds true in the academic environment as well. When all is said and done, computers are used everywhere and on a continually basis. As a result, understanding and applying computer ergonomics is of vital importance in this day and age.

Perhaps the most widely understood and utilized definition of computer ergonomics runs something like: The science with a primary purpose of designing computer equipment, workstations and related products in order to allow people the ability to undertake their jobs or tasks in a safe and healthy manner. The actual, scientific definition of ergonomics is:

“Ergonomics and human factors use knowledge of human abilities and limitations to design systems, organizations, jobs, machines, tools and consumer products for safe, efficient and comfortable human use.”

Computer ergonomics is now understood to be very important. By appropriately applying ergonomic principles to the design and utilization of computers and related equipment, people are able to avoid serious injuries and conditions that might otherwise occur or develop as a result of using computers and related items.

Interestingly, when it comes to ergonomics, people who study this field have adapted Leonardo Da Vinci’s famous drawing of a man to be utilized as their symbol of their practice. This is the drawing featuring a man manipulating his limbs, a man drawn surrounded by a circle, a very famous and widely circulated drawing indeed.

Ergonomists understand the keen interrelationship between designing safe equipment and practices and increasing efficiency. The simple theory is that the more comfortable a person is in the use of equipment such as a computer, the less of a negative impact the use of such equipment will have on his or her body, the more effective and efficient he or she will be over both the short and the long term.

In summary, if you are like most people in the workaday world who must use a computer and related equipment with regularity, you will want to make certain that you are considering ergonomics in both the design and utilization of the workstation, equipment and related items. Your present productivity and your future health will depend on properly implementing concepts associated with computer ergonomics. You will be well served both in the short term and well into the future.

Reference: computer ergonomics

Well, that’s my lovely new laptop (dell inspiron 1420). It is very beautiful, isn’t it? However, it could be very annoying when the shinny screen LCD got some scratch or maybe just looks very dirty. Since you’re so hurry to clean it using your hand / finger (most of people / user usually do), you’re exactly make your LCD screen very dirty than before.

So, Here’s how to brew your own laptop screen cleaning kit using simple household ingredients. Prepare for the things you’ll need are: Isopropyl alcohol (Not Rubbing alcohol,it may contain oil), Distilled Water, A soft Cotton Cloth (a terry towel).

Cleaning Steps

1. Dilute isopropyl alcohol (not rubbing alcohol, as it may contain oil) into a solution of no greater than 50% alcohol and 50% with distilled water / deionised water. Purified / bottled water works well too.
2. Put the solution in a small atomizer bottle, the type that you push from the top to get a fine mist. Don’t use this, however, to spray on the screen itself.
3. Apply the solution to a cotton cloth, such as an old T-shirt, lint-free microfiber cloth, or other very soft cloth. A large cloth is best, since it will help to reduce the risk of leaving streaks across the screen from finger pressure.
4. Wipe the cloth against the screen in a circular, or other consistent motion. Apply an even pressure to the cloth but take care not to press your fingers into the cloth or screen.

Here’s Some Tips for You

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You should probably have a lot of question about digital camera, didn’t you? This is some of the question that cover most all of the topic about digital camera.

How Digital Camera Work ?

In contrast to a conventional film camera, in a digital camera the light is focused onto an image sensor called a CCD (charge coupled device). The CCD is a collection of light-sensitive photosites that produce an electric charge when struck by light. These charges are converted into numbers that are stored in the memory (usually on a memory chip). From there, the whole image can be displayed, sent to a computer, or even printed directly on a printer.

Is the Digital Zoom Important ?

No, it is not. Unlike optical zoom, only some of the light sensors are used to produce an image when the digital zoom is used, producing a lower-quality picture. The same effect can be achieved by using the zoom in the image-processing software. The digital zoom is a marketing gimmick allowing digital camera manufacturers to claim a higher zoom factor than their cameras can really achieve.

Is the Image Stabilization Important ?

The image stabilization is very important when choosing a camera with a high optical zoom factor (>4). Without this feature, most pictures taken while zooming in, or at longer exposure times, and holding the camera in your hand will be blurred. Note that almost all digital camcorders have image stabilization.

What Resolution do I Need for High Quality Picture ?

For 4 inch by 6 inch pictures, you need at least 0.9 mega pixels. For 5×7 prints, you need at least 1.3 mega pixels. For 8×10 prints, you need at least 3.0 mega pixels. For 8.5×11 prints, you need at least 3.5 mega pixels. For putting up pictures on web sites, a 2.0 mega pixel camera should be enough.

What is ISO Speed ?

This setting has been adopted from film cameras. It refers to the film’s sensitivity to light. Higher ISO speeds are needed to take pictures in worse lighting conditions, however they also cause an increased amount of noise. 100 ISO is the default. At 400 ISO the noise is easily detectable on most cameras.

What is Lens Aperture ?

Lens aperture or the f-number is the ratio of the focal length of the lens to the diameter of the light rays passing through the aperture in the iris diaphragm. Smaller numbers represent bigger openings and allow more light to pass through. F-number settings are adjustable; lenses are marked with their maximum aperture (lowest f-number).

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