The inventor of the pencil was Austrian Joseph Hardtmuth. He was born in/kloc-0 on February 20th, 752. His father is a carpenter in Asper. Hardtmuth studied the bricklayer's craft in Vienna, later became an architect, and once founded a brick factory.
At that time, the pen used for writing was of poor quality, so he decided to invent a new pen. He mixed clay with graphite powder, made it into the shape of a refill, and burned it in the fire, so that he could draw traces on the paper. He added a proper proportion of clay to graphite powder to make pencil lead have a certain hardness. 1792, he set up his own pencil factory in Vienna, and still produces pencils today.