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.
One of the electric pen's offsprings was the mimeograph developed by A. B. Dick in the mid-1880s. Dick not only acquired rights to Edison's copying patents but also his assistance in marketing the system as the Edison Mimeograph.