Image conversion In Computers

Written by KRISH


Image Conversion In Computers

JPEG, GIFF/JIFF, BMP, and TIFF arerepparttar most commonly used formats for storing still image files such as photographs, graphics, and drawings. JPEG stands for Joint Photographic Experts Group and is a standard for image compression. However, some amount of data/detail is lost inrepparttar 135174 process. JPEG therefore is characterized by a glossy compression technique for still color images, just as MPEG is used for compressing motion picture files. GIFF/JIFF stands for Graphics Interchange format, which is a bit-mapped graphics file format. Its storage is limited to about 256 colors as against 16 million colors in JPEG. GIFF therefore is more suitable to store illustrations rather than color photos. Other popular formats for storing bit-mapped images are TIFF (Tagged image file format), BMP,and PCX. You'll also see GIF and JPG. You may be wondering what a bit-map is? A bit-map graphic is composed of a pattern of dots (each dot containing bits of data). Vector graphics, onrepparttar 135175 other hand, use geometrical formulas to represent images. The latter can be scaled i.e.repparttar 135176 object size can be changed while maintaining its shape. Vector images are thus more flexible than bit-maps. Also vector imageslook better on higher resolution and require less memory. This brings us torepparttar 135177 difference between Paint programs and Draw programs. In Paint programrepparttar 135178 drawings are represented as bit-maps. Draw programs, onrepparttar 135179 other hand, represent images as vector graphics.

Why we need to convert images from one format to another?

Converting GIFF files to JPEG can compressrepparttar 135180 files to a considerable extent. The uncompressed data is normally 24 bits/pixel for full-color images. JPEG can achieve 10:1 to 20:1 compression without apparent loss, 30:1 to 50:1 compression with small to moderate defects, and 100:1 for very low quality purposes like archiving. These smaller size files increase storage capacity and take lesser transmission time across networks. JPEG files are extremely useful for image archiving purposes. JPEG files store a full color range (24 bits/pixel as against 8 bits/pixels in GIFF).The display of images is particularly good on full-color hardware that is becoming common now.

10 Solid Reasons To Make Your Next PC A Notebook

Written by Titus Hoskins


Notebook computers are becoming very popular. They seem to be popping up everywhere: on tv shows, on airplanes, in movies, or in your friend's lap. These sleek little machines are invading our daily lives like never before... andrepparttar invasion has just started. Find out why they have become so popular with their users and why your next PC should probably be a notebook computer. It is estimated that over 42 million computer notebooks will be produced this year. And that number is said to be growing by 20% each year. So what's drivingrepparttar 134975 demand for these devices, what's making them so popular?

It's more than justrepparttar 134976 next techno fad, notebook computers offer some very practical solutions to our computing requirements and needs. There are some real solid reasons why they have become so popular among their users. These arerepparttar 134977 same reasons why you should consider making your next PC purchase a notebook or laptop computer.

So if you need convincing, here are those 10 solid reasons why you should consider buying a notebook computer:

1. Size. This is one situation where size really does matter. It'srepparttar 134978 main reason you should consider buying a notebook or laptop inrepparttar 134979 first place. You want a PC that will fit neatly in your hand to take to your next office meeting, you want a convenient laptop to take to class or you want a notebook for your next cross country business trip.

Notebooks come in a variety of sizes to match your needs or purpose. They are categorized or grouped accordingly:

Tablet PC (smallest) Size of a paper tablet or notepad, less than 3 pounds.

Ultra Portable (small), around 11" x 10", less than 1.3 inches thick, less than 4 pounds.

Thin and Light (mid-size), around 11-14" x 11", 1 to 1.4 inches thick, from 5 to 7 pounds.

Desktop Replacements (largest), more than 13" x 11", more than 1.5 inches, more than 7 pounds and up.

As you can see there is a great range of sizes so you should have no trouble finding a notebook computer to satisfy your needs. Just match repparttar 134980 notebook size torepparttar 134981 main purpose or use of your notebook and you can't go wrong.

2. Portability. Probablyrepparttar 134982 second, if notrepparttar 134983 most important reason you're considering buying a notebook or laptop. You want a PC that's portable and lightweight. One that you can take anywhere; to class, to meetings, on business trips or from room to room in your home.

This freedom of movement -- taking your office or vital data along on your business or personal travels isrepparttar 134984 main selling point ofrepparttar 134985 notebook computer. The portability factor is one you should seriously consider -- do you need a portable computer for your home, work or just for pure enjoyment.

3. Performance. Not too long ago, notebooks or laptops were viewed by many as second class computers when compared torepparttar 134986 performance and speed ofrepparttar 134987 mighty desktop PC. Distance cousins discreetly allocated torepparttar 134988 sidelines.

But things have changed! Although still not on par withrepparttar 134989 desktop, thanks torepparttar 134990 next generation notebook chipset, Intel's New Sonoma Platform, many notebooks come very close to providingrepparttar 134991 performance level of a desktop PC. Many notebooks, especiallyrepparttar 134992 desktop replacements, already have impressive technical specs that would shame most ordinary desktops. Some of these desktop replacements even use desktop processors or CPUs.

With hard drives up to 100GB or more at (7,200rpm), with RAM up to 2MB in some cases, and supported with Intel Pentium 4's, at 3.4GHz or more --- most notebooks are very capable of handling almost all computing applications and functions with ease. They can dorepparttar 134993 job.

4. Connections. We live in a wireless world. The notebook will do for computers, whatrepparttar 134994 cell phone did forrepparttar 134995 telephone industry -- make our communications wireless. Being constantly connected to your friends, your business or your family does have a certain appeal that can't be denied. The notebook computer will give you this wireless connection.

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