Parts Flash

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Question: "What is 'Flash'? Is it the same as 'Adobe Flash'?"

A: Flash is called "Macromedia Flash", but is now re-labeled as "Adobe Flash", because Adobe bought Macromedia in 2005.
from about.com
Is streaming Flash animation for websites. Sometimes Flash is a portion of an HTML web page, and sometimes a website is made entirely of Flash. Anyway, the Flash files are called "Flash movies". These are special. Archives SWF format beam to the web browser screen as you watch them.

Flash requires a plugin special free (as amended) of your browser to view Flash movies.

Flash Movies offers two very special experiences web browsing: loads very fast, and vector animation with interactivity:

Benefit Flash # 1: very fast load to the screen of your
Unlike attachments in email, you have to wait to fully download before watching, movies Flash to start playing as the content is transmitted to you. While the Flash movie can be 6 megabytes large, you can begin to see the animation at a time, while the remaining "ordinary" to your screen in the background. This makes Flash very desirable for web publishers, as it opens the creative doors for them to make animations very powerful for its readers.
Benefit Flash # 2: vector graphics animation
"Vector graphics" are different from "raster graphics (jpg, gif, PNG, BMP). Vector graphics use mathematical formulas to draw forms of animation, while bitmap graphics save millions of small colored dots to draw pictures. This difference allows for vector graphics file size very small and very sharp at any size format. For these two benefits, Flash designers use vector graphics for visual effects powerful website that will charge your large screen quickly and vigorously.
There are three negative aspects of Flash animation:
Disadvantage # 1: Some organizations Flash movie block that is received via the Internet. While this is partly motivated by fears of Flash Flash viruses and hackers, the biggest motivation is the discipline of staff. Many managers of private companies do not want their employees Flash games on their computers office, so that Flash movies banned in the workplace through technical blockers on the net. Do not be surprised if your employer decides to implement a ban Flash in his office.
Low # 2: Not everyone has the required plugin Flash Player. Because they do not like "blinking things "on their screens, some users choose to disable or not install Flash Player.
Baja # 3: Flash. Movies SWF can be time consuming to edit. It is a very laborious task to change a Flash website quickly. For this reason, almost never see a content page dynamic as a news site that use Flash for their rapid evolution of content. However, Flash is used more for decorative purposes and for publicity purposes and online games.
from about.com