MY INVENTION

I think that the people that draw or paint suffer when don't have a computer suitable for use with a tablet, so my invention is a portable and simple tablet with a pencil to draw everywhere, you won´t need a computer to graph. 

It is will called "Graph3"
It made of metal and processors similar to that of a professional table. The pointer will be of a resistant material and with customizable designs, the tip will be interchangeable to improve accuracy. 

This is similar to tablet or smartphone but it is specialized in design. It can improve the experience in draw because this design is comfortable for the designer. It will have basic design applications and a store to buy more extensions. The client I am addressing is graphic designers and illustrators. 
It is a good invention because help to designers to draw of comfortable way, without a computer or other machines, it is look like to book but digital.