How to find 1's,2's,9's and 10's compliment in Digital Electronics

How to Merge 2 Pictures into 1 Picture using MS Paint | Windows 10 new

About Me:

 I am studying in Bangladesh University of professionals dept of ICT(3rd year).I know some basic programming languages like c,c++, java, python, php, html, css, beginner developer at android studio.

I love web design and web developing. I have some tutorials about programming in Youtube. I also write in blogs at somewhere in blog.Also An Editor at Wikipedia. 

This is all about me :)

Contact Me: 
 -- revelyusuf.blogspot.com 
 -- Facebook_id --fb.com/revelyusufii 
---gmail_account/revelyusuf109@gmail.com

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Web-Designing and html5

Web designing is an art,passion.I am very much intersting about web-designing from my college life.It's an amazing experience to build an website.After creating an aweosome website you feel like a prince.
html means hypertext markup language that used for creating and designing an website.html latest version name is html5.A website is nothing but html.there is an another aweosome this is css that is all about coloring and designing a website.css is nothing without html.