two great inventors laszlo biro was born in budapest in 1899 . after he left school he stuied medicine at university,buthe didn't finish his studies. he noticed that newspaper in dried very quickly on the paper,and put the ink into his fountain pen. he and his brother gyorgy then invented a new type of pen with a small ball at the end. the new pen worked with the thick ink. in 1939 laszlo moved to paris and then to argentina. biro invented many other things but the most important was the ball-point pen,or biro. laszlo biro died in buenos aires in 1985 erno rubik's father was an enginer and his mother was a poet . after leaving school, he studied architecture and design at the technical university. rubik called in the "magic cube ". it soon became popular in hungary and the rest of europe . inthe early 1980s the cube became popular in the usa too, and got a new name :'rubik's cube'. it is the world's best-selling toy-some people say there are 300 million cubes in the world. rubik became very rich and went on to invent many more games and pezzles.