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Choose the right notebook before buying

Sat, 16 Feb 2008 00:00:00 -0600

Having a notebook is the desire of many people, after all, that provides mobility equipment, occupies little space on the table and it is easy to find a place to save it. In addition, the notebooks are increasingly cheaper and with a variety of models growing, indicating that manufacturers are investing heavy in that segment. If you think the time has come to buy your, the InfoWester presented below 10 Tips for Choosing the right notebook for their activities. Being attentive to them, you will certainly big business!

1 - Memory

For the choice of the amount of memory in your notebook, you must consider the current market standard. For example, it is known that to run Windows XP or a recent distribution of Linux using graphical environment KDE or Gnome, it is important to have at least 512 MB of RAM. However, the ideal is to have at least 1 GB of memory to not harm performance and to run current operating systems, such as Windows Vista. So choice always a notebook that has memory capabilities equivalent to the current standard and allow expansion.

2 - Processor

As for the processor, it is not necessary to choose the most powerful (but is not recommended choose a below of 1.5 GHz), but the processor that has resources for energy saving, such as models of the Pentium M line, Intel and Mobile Sempron, AMD. These processors have the ability to save energy when certain features are not being used. In addition to helping to prevent heating, this feature makes the energy of the battery last longer. If you prefer a more powerful notebook, which can run games and applications with tranquility heavier, consider a 64-bit processor or with dual core, as the lines Core 2 Duo (Intel) and Turion 64 X2 (AMD). Note, however, that most powerful processors can considerably the price of the notebook. Furthermore, may represent a good investment over the long term, since you will probably take longer to switch notebook.

3 - Battery

In mobile phones, smartphones and mainly in notebooks, it has not been possible to develop a type of battery that lasts for a time considered appropriate. Anyway, the choice of the right technology is able to add some time of use. Currently it is recommended the use of batteries of the type of lithium ions. These tend to have more lasting burden, its useful life is longer and do not add considerable cost to the notebook. One important detail: if you need to use your notebook battery by constantly, it is recommended that you buy a model that allows adding an extra battery. There are models of this type that simply have more room for a battery or allowing the withdrawal of the drive, CD / DVD to fit the new battery. Consider also the purchase of models with battery at least 6 cells. In practice, the more cells, more will stay on your laptop away from the wall.

4 - HDs

The HDs for notebooks are lower than those used in PCs: 2 "and 3.5", respectively. This characteristic makes the HDs for notebooks are usually a bit more expensive that the HDs for PCs So the choice of HD with great ability should only be considered if necessary, to prevent a considerable increase in cost. Note also that you should not choose a model with little ability thinking of saving because if that HD is already off-line (or are about to get out of line), its price may be somewhat smaller than a HD capacity greater. So prefer HD with a 120 GB instead of 80 GB, for example. Detail important: to reduce energy consumption, it is common to find HDs for notebook slower that the HDs for PCs While a common HD wheel to the current 7,200 RPM (revolutions per minute), there HDs for notebooks that run to 4,200 or 5,400 RPM RPM. Naturally, HDs with at least 5,400 RPM are preferable.

5 - Unit of CD / DVD

For the current standards, the ideal is to have at least one notebook with a CD and DVD player. The difference in price between that device and one that only reads CDs is very small. Moreover, it should be considered that most DVD players also writes CD thus is a choice that is worthwhile. The devices that record DVD are slightly more expensive, so you may want to consider spending a little and buy a unit of this type. For drives, floppy disk, this type of media is increasingly into disuse. With the popularization of pendrives, Flash memory cards, rewritable CDs and DVDs, have a floppy drive, only appears feasible in very specific situations. For these cases, we recommend purchase an external floppy drive.

6 - Screen

Obviously, the larger the screen (display), the better the view. However, the larger the screen, the greater is the size of the notebook and its price. Therefore, the choice of the size of the display must be in accordance with their needs. If you want a notebook to use at home to save space, a large screen is recommended - for this, you can use notebooks with screen, 17. "Furthermore, if you want to carry the notebook to various places (eg on visits their customers) a smaller screen helps reduce the space it occupies in the notebook bag or in the briefcase. Another important choice to be made in relation to the screen is their type. choose the screen monitors that use of Active Matrix (TFT), because this type has better picture quality, as compared to the screens of Passive matrix (DSTN).

7 - Graphics Card

Perhaps you do not go play games on your notebook, but probably will want to watch videos on it - for example, during a trip by plane. Stop run videos or even some games, I recommend choosing a notebook with a good video card. In this case, it is important to check if the video card's memory (VRAM) is unique - ONE (Universal Memory Architecture) - or is the shared RAM principal - SMA (Shared Memory Architecture). If you choose a shared, which is in a notebook with at least 1 GB of RAM. If you choose appliances with VRAM exclusive, it is recommended that it has at least 64 MB of capacity.

8 - Device for cursor

This is another important detail: what kind of technology to use as a substitute mouse? The Touchpad is a type of device where the user moves the cursor on the screen through the movement of your finger on a small panel sensitive to taps. The Touchpad is usually accompanied by buttons that have the same functions of the buttons of a mouse common. However, it also can simulate mouse clicks pressing the finger quickly on the scoreboard. Another option is the Pointing Stick, a small button that is between the keys of the notebook, which has a flexibility that allows the movement of the cursor under the pressure that you apply through your finger. The choice of the best device is complicated because it is a matter of affinity. So, it's best test each option before buying a notebook or purchase an equipment that makes use of both technologies.

More information about Notebook been in
Notebook

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Notebook
This article was described by Everton André cnsulta of the TI http://www.cotacota.com.br

Source: http://www.articletrader.com

What you need to know about Digital Cameras

Sat, 16 Feb 2008 00:00:00 -0600

This article was based on the link below: Camera Digital

This guide seeks to guide those who wish to enter the world of digital photography as it is very common topar with a huge amount of technical information complicated for most mortals.

As a guide you to be able to choose what type of camera fits better to their needs and thus evaluate the different offers that are on the market.

The digital camera has revolutionized the process of capturing images, contributing to the popularization of photography.

Instead of using the photosensitive layer (film) for the registration of the images, which requires, after the acquisition of images, a process of revelation and expansion of the copies, the digital camera records the images through a sensor that among other types can be CMOS-type or the type CCD, storing the images on the camera or memory card. Each camera supports one or more types of memory. As the most common the CompactFlash, Smart Media, Memory Stick, Sd Card, MMC and XD).

These images can be viewed immediately on the monitor of the camera and can be erased if the result has not been satisfactory. They can be transferred through e-mail, virtual album, or simply presented on the TV screens.

One of the features most exploited by manufacturers of digital cameras is the resolution of the sensor of a camera, measured in megapixels.

In theory, the higher the number of megapixels, the better the quality of the photo generated, because its size will be larger and will allow more zoom and enlargements without loss of quality. However, the quality of digital photo does not depend only on the resolution in megapixels, but of the whole way that a digital camera. The factors that most influence the quality of the photos / videos are the quality of the objective lens, the algorithm (software camera's internal processing the data captured) and the resources that the photographer can use to a better outcome, or even possible effects special in the picture. However, depending on the use to be made to the photo, too many megapixels will not bring additional benefit to the quality of the image and onerará the cost of the equipment.

Normally the cameras geared to professional use are endowed with greater quantity of megapixels, enabling them to make major expansions. For the common user, machines with resolution between 3 and 5 megapixels generate excellent results for the common use.

The best camera, then, is one that can take a picture with the largest number of pixels, right?

Wrong, for two reasons:

-- From nothing worth an avalanche of megapixels, if the user will not need pictures larger than 10 x 15 cm;

-- There are other important functions that the user needs to check before buying your machine.

It is consensus among the experts that for users and amateur pictures of family travel, the average would be the sensors, at least 3 megapixels (2,048 x 1,536) to achieve reproducible photos with dimensions of 18 x 24 cm. Most of the most popular cameras currently is at the level of 5 megapixels (sets of 2,560 x 1,920 pixels on the sensor), which can reach reproductions of good quality up to 30 x 40 cm.

If the user wants to employ their photos on posters or banners, a camera, high resolution is welcome. Models of 8 megapixels may produce good quality images of up to 70 centimeters by one meter.

TABLE OF RESOLUTION
Resolution Internet /
Email 6x8 10x15 13x18 20x25 28x36 41x51
<1MP 3 2 1 1 1 1 1
1-2MP 4 3 2 1 1 1 1
2-3MP 5 4 3 3 2 1 1
3-4MP 6 5 5 4 4 3 1
4-5MP 6 5 5 5 4 4 3
5-6MP 6 5 5 5 5 4 4
> 6MP 6 5 5 5 5 5 5

References:

BAD = 1
SPREJEMLJIVO = 2
BOM = 3
VERY GOOD = 4
EXCELLENT = 5
OTHER = 6

Battery
At the time of selecting an option to purchase, it is important to estimate what will be its needs as a user, because, depending on the nature and power of the battery, so will yield key elements such as zoom or the display of the LCD screen.

But the most important thing is that nowadays almost all manufacturers offer a standard battery.

Among them are the cameras that work and bring batteries, Nickel-Cadmium and Nickel-Metal Hidrato (which offer longer of use and are rechargeable), and rechargeable batteries, lithium-ion (technologically similar to using cell phones) .

These are considered by experts as the preferred option. If the camera does not bring any of these types of batteries, the option that remains is that of traditional non-rechargeable alkaline AA batteries (and not recommended). Today, we have on the market the AA and AAA rechargeable batteries that rescued usários those who often use these cameras

The autonomy of the batteries available on the market does not change much: on average, you can beat up to 400 photos using the LCD. Without the device, the number may double.

To try to further increase the autonomy, the user may bring tricks, such as adjusting the flash and the lowest decrease in the time of viewing of the photos already beats, and prevent the viewing of the LCD.

There are many brands on the market, below the list and a link to search.

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This article was described by Everton André cnsulta of the TI
Notebook

Source: http://www.articletrader.com