When it comes to printing books or any information, it comes to the printing press. In the past, various files and books were published by hand. It was first discovered by John Gutenberg in 1440. His invention was for the purpose of establishing a printing press. Although initially its structure was not as it is today. However, the first printing press in Asia was used in China. With the invention of the computer came its revolutionary change. At present the printing press is in our house , which is known as printer.