Cybersecurity refers to the preventative techniques used to protect the integrity of networks, programs and data from attack, damage, or unauthorized access.
Pencils were invented in 1795 by a French scientist named Nicolas-Jacques Conte. He used a mixture of graphite, clay and water baked in a kiln to create the lead of the pencil. He then housed this mixture in a wooden frame for writing. Continue Reading.
Pis forPencil. A pencil is something that you use to write or draw with. Pencils are usually made from wood, with a thin strip of graphite (in a lead pencil) or waxy coloured material. The end of the pencil will wear out as you use it, and you will need to sharpen it. Pens do not need sharpening.