For this illustration, it appears that the illustrator may have scanned in some type of textured paper or used a textured paint fill. For the white keys, the illustrator used the shape tool to create perfect circles (the same technique was probably used for the other basic shapes to create the typewriter). For the splitting paper at the top which morphs into data bits, the artist must have used the curved pen tool. For the slanted squares, the illustrator could’ve transformed the squares by pulling on the corners. I like that it is very minimalist and uses simple geometric shapes to create the illustration.

This was created in illustrator quite simply. The designer made a number of different sized circles using the shape tool and then chose a number of different colors. They used the fill tool to change the color of the shapes. Then they changed the opacity of each circle so that some appear more transparent than others. The text colors are the same as some of the dots, so everything works together.