I wonder, what is picture/ image especially JPEG n GIF format ??
Is it lines of bit, byte, or binary ??

thanks...

I wonder, what is picture/ image especially JPEG n GIF format ??
Is it lines of bit, byte, or binary ??

They are represented as sequences of bytes, which themselves are composed of bits, all of which is binary... I'm not sure what exactly you're asking there.

Graphics file formats aren't just "lines"--they have structure which is more complex than I think you think it is. I recommend you do a little research on your own first; these should get you started:

http://en.wikipedia.org/wiki/JPEG
http://en.wikipedia.org/wiki/Graphics_Interchange_Format
http://en.wikipedia.org/wiki/Portable_Network_Graphics
http://en.wikipedia.org/wiki/BMP_file_format
http://en.wikipedia.org/wiki/Tagged_Image_File_Format
http://en.wikipedia.org/wiki/PCX