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.
Pentel Twist-Erase EXPRESS Mechanical Pencil, Assorted Barrel Colors. Pentel first introduced 'automatic pencils' in 1963, beginning a long tradition of developing some of the most diverse, long-lasting and highly treasured mechanical pencils on the planet.