how does a paintbrush work?is there any site to download free software for implenting paintbrush?

Answer 1

All Windows operating systems includes a program called Paint. this is located in Start-Accessories. In Win 3.1 this program was called Paintbrush, in all later versions this was renamed Paint.

How paint programs work:

Each paint program considers your screen to made of thousands of pixels (dots). The paint program remembers the color of each pixel. The colors of all the pixels are stored in RAM while you’re painting. You need lots of RAM if your screen is large & has many pixels, or if you insist on using lots of colors.

That’s because a paint program shrinks a shape by using fewer pixels, and so some of the pixels that contained details are discarded. The lack of detail becomes noticeable when you try to expand the shape back to its original size. Paint programs are called bitmapped graphics programs.

Although Paint is very easy to use, a good tutorial is:

http://www.bittybitznpieces.com/LORAINESMSPAINTTIPS.htm

Other paint programs:

http://www.download.com/Deep-Paint/3000-2191_4-10398243.html
http://www.download.hr/index2.php?file=1471